| OldRacer | 03-29-2002 02:32 PM |
Unichip w/o Boost Control for STX??
A few weeks ago I skimmed over a thread talking about how the guys at Cobb were (and here's what I don't remember) either planning on, or thinking/talking about putting out a Unichip without boost control. As I read the regs, such a thing would be legal for STX class. Somebody reported that they'd heard from someone at Cobb that such a configuration would probably pick up "20-30hp".
I spent an hour or so searching, but couldn't turn up this thread, so I'm guessing it was part of the one that vanished into cyberspace.
So, anybody up on this? From discussions with Josh at Cobb last year, I'm certain that the Unichip can be mapped so as to not change boost from stock. When I e-mailed him (explaining what I'd seen, and what I was interested in, and why) I got a pretty standard "we sell packages, not separate parts; you need to buy our Club Spec kit..." reply.
I realize that the hp increase/dollar is not going to be all that good, but it seems like a pretty obvious thing for anyone serious about developing a WRX to the limits of the STX rules....
If there is anybody that will make such a configuration available, I'd like to buy one......???????.....
Also like to hear if this makes sense (or doesn't) to anyone else. If there are others interested, maybe Cobb, or somebody else will, uh, jump in to get our business.
Len
I spent an hour or so searching, but couldn't turn up this thread, so I'm guessing it was part of the one that vanished into cyberspace.
So, anybody up on this? From discussions with Josh at Cobb last year, I'm certain that the Unichip can be mapped so as to not change boost from stock. When I e-mailed him (explaining what I'd seen, and what I was interested in, and why) I got a pretty standard "we sell packages, not separate parts; you need to buy our Club Spec kit..." reply.
I realize that the hp increase/dollar is not going to be all that good, but it seems like a pretty obvious thing for anyone serious about developing a WRX to the limits of the STX rules....
If there is anybody that will make such a configuration available, I'd like to buy one......???????.....
Also like to hear if this makes sense (or doesn't) to anyone else. If there are others interested, maybe Cobb, or somebody else will, uh, jump in to get our business.
Len
| KC | 03-29-2002 02:39 PM |
I've been looking into this myself and from what I have found out, it's totally legal. Same as the vishnu. You're not altering any boost parameters.
I was quoted about $700 for the Cobb unit.
HP is HP in street touring, the more you can get, the more of a chance you have to win.
<-- is considering these as options... also considering AFC.... why not?
--kC
I was quoted about $700 for the Cobb unit.
HP is HP in street touring, the more you can get, the more of a chance you have to win.
<-- is considering these as options... also considering AFC.... why not?
--kC
| OldRacer | 03-29-2002 03:09 PM |
KC-
Well, it sounds like I'm not the only one thinking along these lines; HP IS HP, and every little bit helps...
When you say "Cobb quoted $700", how did you get them agree to sell such a setup??
Here's what I got back when I asked about it (making it clear I was looking for a no-boost control, STX-legal setup:
We are only making the Unichip available as part of the Club Spec System.
The makers of the Unichip did not design it to be sold alone pre-programmed,
but rather for a tuner to tailor a car to their modifications. We prefer to
use the Unichip as it was intended, and pre-program it to take advantage of
APS-COBB parts that are added to the car in the Club Spec System, as we know
their characteristics. We do not have it available as a separate piece.
You would have to go to one of our Certified Installation Centers which
right now would mean us or Modern Garage. We have had well over 100 WRXs on
our dyno and it has only served to re-enforce our stance on "PnP" Unichips
not being in a customer's best interest.
Do not hesitate to ask if you have any other questions.
Thanks,
Josh
Cobb Tuning
======================
Leaves me with my initial question- will someone sell such a setup??
Well, it sounds like I'm not the only one thinking along these lines; HP IS HP, and every little bit helps...
When you say "Cobb quoted $700", how did you get them agree to sell such a setup??
Here's what I got back when I asked about it (making it clear I was looking for a no-boost control, STX-legal setup:
We are only making the Unichip available as part of the Club Spec System.
The makers of the Unichip did not design it to be sold alone pre-programmed,
but rather for a tuner to tailor a car to their modifications. We prefer to
use the Unichip as it was intended, and pre-program it to take advantage of
APS-COBB parts that are added to the car in the Club Spec System, as we know
their characteristics. We do not have it available as a separate piece.
You would have to go to one of our Certified Installation Centers which
right now would mean us or Modern Garage. We have had well over 100 WRXs on
our dyno and it has only served to re-enforce our stance on "PnP" Unichips
not being in a customer's best interest.
Do not hesitate to ask if you have any other questions.
Thanks,
Josh
Cobb Tuning
======================
Leaves me with my initial question- will someone sell such a setup??
| Jason_Adams | 03-29-2002 03:27 PM |
Last year I bought the Unichip from Cobb, and had it installed on my bone-stock WRX. On Cobb's dyno we were getting about 25 more horsepower at the crank. If you add in a cat-back exhaust and K&N filter, I'm sure you could get a few more hp.
When Trey tuned mine on the dyno, he never increased the boost from stock, just adjusted A/F ratios and timing. So it is possible with their chip. However, I think that a more economical alternative would be the A'pexi S-AFC. That way no-one could accuse you of raising boost levels even if you weren't.
Jason
When Trey tuned mine on the dyno, he never increased the boost from stock, just adjusted A/F ratios and timing. So it is possible with their chip. However, I think that a more economical alternative would be the A'pexi S-AFC. That way no-one could accuse you of raising boost levels even if you weren't.
Jason
| OldRacer | 03-29-2002 03:52 PM |
Jason,
Thanks.
Have cat-back, K&N. Sounds like did for you exactly what I'm looking for. I wonder why I get the "we only sell w/ Club Spec package" reply.....
I'd looked into AFC, too. Less $$, but only deals w/ A/F. Unichip addresses both fuel and timing (which, of course is what STX rules allow).
Len
Thanks.
Have cat-back, K&N. Sounds like did for you exactly what I'm looking for. I wonder why I get the "we only sell w/ Club Spec package" reply.....
I'd looked into AFC, too. Less $$, but only deals w/ A/F. Unichip addresses both fuel and timing (which, of course is what STX rules allow).
Len
| ChrisW | 03-29-2002 04:07 PM |
The biggest problem your going to have with the unichip install without a boost controller, is boost spike.
You can legally raise the boost levels in STX or SP as long as you leave the stock boost control system unmolested. period. We can't touch the boost control system(s) because there are no mechanical equivelents available on passenger cars. The stock BCS system is calibrated to work with a certain volume of air traveling through the engine. Once you start adding items to improve this flow of air, (like a K&N filter, cat back exhaust, samco IC hoses, Up-pipe, etc) you will naturally increase boost as a result. It's unavoidable, your flowing more air than the BCS is calibrated for.
Our stock wastegate and BOV can easilly hold 20psi, but the ECU is programmed not to allow this. The unichip and S-AFC allow us to get around this problem by altering the fuel trim and ignition timing values selected by the ECU. All perfectly legal under the rules, but you have to accomidate any possible boost spiking. It's not an easy task, but I have managed to do this to a DSM. Problem is your right on the ragged edge, and if you make a mistake, it's expensive (detonation).
From the research that I have read about here on the i-club, I wouldn't recommend a S-AFC without boost control. While the unichip has a series of avialable maps to choose from (similar to the ECU) the S-AFC does not. Everything is manual. If the weather changes, you need to change your S-AFC settings. If things get too hot in the combustion chambers, the S-AFC will not help you like the unichip will, but will continue merrily on it's way until you reach detonation, or notice the problem.
You can legally raise the boost levels in STX or SP as long as you leave the stock boost control system unmolested. period. We can't touch the boost control system(s) because there are no mechanical equivelents available on passenger cars. The stock BCS system is calibrated to work with a certain volume of air traveling through the engine. Once you start adding items to improve this flow of air, (like a K&N filter, cat back exhaust, samco IC hoses, Up-pipe, etc) you will naturally increase boost as a result. It's unavoidable, your flowing more air than the BCS is calibrated for.
Our stock wastegate and BOV can easilly hold 20psi, but the ECU is programmed not to allow this. The unichip and S-AFC allow us to get around this problem by altering the fuel trim and ignition timing values selected by the ECU. All perfectly legal under the rules, but you have to accomidate any possible boost spiking. It's not an easy task, but I have managed to do this to a DSM. Problem is your right on the ragged edge, and if you make a mistake, it's expensive (detonation).
From the research that I have read about here on the i-club, I wouldn't recommend a S-AFC without boost control. While the unichip has a series of avialable maps to choose from (similar to the ECU) the S-AFC does not. Everything is manual. If the weather changes, you need to change your S-AFC settings. If things get too hot in the combustion chambers, the S-AFC will not help you like the unichip will, but will continue merrily on it's way until you reach detonation, or notice the problem.
| BIGSKYWRX | 03-30-2002 12:02 AM |
I emailed Trey a couple of months back:
Mike,
Thanks for the email. Yes, the Unichip can be used without running the
Boost Control module. You would simply rely on the factory boost
management, and modify only the fuel and ignition mapping.
Yes, I would imagine that you could get very nice gains, though I don't have
any exact figures. We don't normally run much more boost than stock when
running a Unichip on a stock car and we still get very nice improvements.
And yes, if you later wanted to add the boost control module, this is very
easy to do.
Thanks,
Trey
Cobb Tuning
I later called him and visited some more on this issue. I thought that maybe one could simply add/remove the boost control module (have our cake and eat it too), no such luck. The chips would have to be reflashed each time, thus not an option. But if down the road one was wanting to move up to SM say, you could get your chip reflashed and add the boost control module (bmc).
The chip sans the bmc is a little cheaper also, I can't remember how much cheaper just a little though ($50-75?). I'm currently waiting for their plug n play version which should be coming pretty soon. Also currently waiting for SEB to rule on the cat issue (sounds promising), before any unichip.
Big Sky
Mike,
Thanks for the email. Yes, the Unichip can be used without running the
Boost Control module. You would simply rely on the factory boost
management, and modify only the fuel and ignition mapping.
Yes, I would imagine that you could get very nice gains, though I don't have
any exact figures. We don't normally run much more boost than stock when
running a Unichip on a stock car and we still get very nice improvements.
And yes, if you later wanted to add the boost control module, this is very
easy to do.
Thanks,
Trey
Cobb Tuning
I later called him and visited some more on this issue. I thought that maybe one could simply add/remove the boost control module (have our cake and eat it too), no such luck. The chips would have to be reflashed each time, thus not an option. But if down the road one was wanting to move up to SM say, you could get your chip reflashed and add the boost control module (bmc).
The chip sans the bmc is a little cheaper also, I can't remember how much cheaper just a little though ($50-75?). I'm currently waiting for their plug n play version which should be coming pretty soon. Also currently waiting for SEB to rule on the cat issue (sounds promising), before any unichip.
Big Sky
| z3coupe | 03-30-2002 02:48 AM |
Just got some GREAT NEWS guys, for STX. Look at my new post on the CAT issue :)
| shifterkartracer | 03-30-2002 07:43 AM |
Has anyone else thought about how difficult this will be to enforce properly. How do the tech inspectors know if you are running a unichip with or without boost control. For that matter, how do they know you are running a chip period. I fully realize that tech inspections and class selection (especially at the regional level) is very reliant on the driver's full disclosure of mods and hopefully a sense of fair play. Problem is, there are some people that are not honest. Even if you suspected someone else was running modified boost control, how could it be determined even in a dispute situation. This is starting to sound a bit like CART or F1 traction control.
| OldRacer | 03-30-2002 09:01 AM |
Big Sky-
Well, on the one hand, what Trey's saying to you is encouraging- exactly what I'm looking for. On the other hand, its a bit mystifying why he's telling you, "can do", and he's telling me, "we only will sell the Unichip w/ the Club Spec package..." ...wierd... I'll, uh, continue the dialog with him.
Shifterkartracer-
Yeah, it does remind one of the F1 traction control issue, doesn't it... My thought has been to get, when purchasing a Unichip set up w/o boost control, either a letter or a detailed receipt clearly stating how the chip was set up. That ought to cover it, at least up to some level. My guess/assumption is that if someone wanted to push a protest (in the face of such documentation), the programming could be pulled/downloaded, and that would verify the truth of the documentation. I could be wrong on that; being "old school", my understanding of the functional details of electronic management systems is only a bit beyond theoretical, and far short of comprehensive.
ChrisW-
Help me; I'm interested in understanding better your caution on boost spiking. As noted above, my functional understanding is less than perfect; you're seeing understanding things at a level beyond mine. My thought is to have the Unichip installed/calibrated much like Jason describes; with the setup I've got-cleaned-up induction flow, K & N, cat-back exhaust, and realize that if I mess w/ anything after that, I may well need to have chip adjusted/re-flashed. Am I missing something? Why/how w/ this approach would I be risking boost spike (and what is a "DSM". BTW, and again, maybe I'm wrong, but I thought the Samco IC hoses would not be legal for STX; wrong? Can you confirm that aftermarket up-pipe is legal?
Really appreciate the good feedback on this. Should be helpful to anyone running their Rex in STX.
Thanx, Len
Well, on the one hand, what Trey's saying to you is encouraging- exactly what I'm looking for. On the other hand, its a bit mystifying why he's telling you, "can do", and he's telling me, "we only will sell the Unichip w/ the Club Spec package..." ...wierd... I'll, uh, continue the dialog with him.
Shifterkartracer-
Yeah, it does remind one of the F1 traction control issue, doesn't it... My thought has been to get, when purchasing a Unichip set up w/o boost control, either a letter or a detailed receipt clearly stating how the chip was set up. That ought to cover it, at least up to some level. My guess/assumption is that if someone wanted to push a protest (in the face of such documentation), the programming could be pulled/downloaded, and that would verify the truth of the documentation. I could be wrong on that; being "old school", my understanding of the functional details of electronic management systems is only a bit beyond theoretical, and far short of comprehensive.
ChrisW-
Help me; I'm interested in understanding better your caution on boost spiking. As noted above, my functional understanding is less than perfect; you're seeing understanding things at a level beyond mine. My thought is to have the Unichip installed/calibrated much like Jason describes; with the setup I've got-cleaned-up induction flow, K & N, cat-back exhaust, and realize that if I mess w/ anything after that, I may well need to have chip adjusted/re-flashed. Am I missing something? Why/how w/ this approach would I be risking boost spike (and what is a "DSM". BTW, and again, maybe I'm wrong, but I thought the Samco IC hoses would not be legal for STX; wrong? Can you confirm that aftermarket up-pipe is legal?
Really appreciate the good feedback on this. Should be helpful to anyone running their Rex in STX.
Thanx, Len
| ChrisW | 03-30-2002 02:19 PM |
I am not running in STX, yet.... Since I run ESP, the IC hoses are legal.
OldRacer, pm'ed ya.
OldRacer, pm'ed ya.
| dwx | 03-31-2002 02:03 PM |
I ran across a page comparing the different autox classes in which it said any stock hoses could be replaced by silicone replacements in STS and STX class. He had quite a few clarifications listed on his page for each different class (stock/sts/sp) and basically listed what was and wasn't legal. I wish I could find the page again...
I have a turboxs unichip and plan on just disconnecting it for autox use since the boost control is being controlled by the harness itself. I'm sure I could modify or send back the harness to turboxs and they could modify it so it uses stock ecu boost control, but I'm not ready to do that just yet. The vishnu unichip could be installed and would be the best bet for autox. It uses MAP values to control it's parameters so it should yield good gains without even using the manual boost controller that comes with it. TurboXS can modify their harness/unichip to use MAP values as well if one was to go that route.
Phil
I have a turboxs unichip and plan on just disconnecting it for autox use since the boost control is being controlled by the harness itself. I'm sure I could modify or send back the harness to turboxs and they could modify it so it uses stock ecu boost control, but I'm not ready to do that just yet. The vishnu unichip could be installed and would be the best bet for autox. It uses MAP values to control it's parameters so it should yield good gains without even using the manual boost controller that comes with it. TurboXS can modify their harness/unichip to use MAP values as well if one was to go that route.
Phil
| OldRacer | 04-01-2002 01:04 PM |
Heard back from Josh at Cobb which solved my initial question of why would they provide a Unichip w/ boost control to some, and yet I was hearing "only w/ Club Spec package". As long as I get it installed and programmed at one of their authorized shops (Modern in SLC in my case), everything's cool. In the process of finalizing cost, and getting a trip scheduled.
Len
Len
| Jaxx | 04-01-2002 01:38 PM |
unichip without boost control would be called vishnu stage zero...
| ChrisW | 04-01-2002 09:58 PM |
[QUOTE][i]Originally posted by Jaxx [/i]
[B]unichip without boost control would be called vishnu stage zero... [/B][/QUOTE]
correction.
unichip with out boost control is the vishnu stage 0 with MBC disconnected. you can special order it without, but it requires a special mapping (read: conservative).
[B]unichip without boost control would be called vishnu stage zero... [/B][/QUOTE]
correction.
unichip with out boost control is the vishnu stage 0 with MBC disconnected. you can special order it without, but it requires a special mapping (read: conservative).
| elgorey | 04-02-2002 10:05 AM |
[QUOTE][i]Originally posted by shifterkartracer [/i]
[B]Has anyone else thought about how difficult this will be to enforce properly. How do the tech inspectors know if you are running a unichip with or without boost control. For that matter, how do they know you are running a chip period[/B][/QUOTE]
They tech 'inspectors' dont know. Adhering to autoX rules is mostly a matter of honesty. I know several 1.8t drivers who chipped their cars to run much higher boost and still run STS. Its just impossible to police, especially with the huge 200+ number of cars in each event
At the local level, basic rule adherence isnt even checked for at all. At an autoX here a couple weeks ago a Type R was running R compounds in STX class. Not one of the tech inspectors noticed.
[B]Has anyone else thought about how difficult this will be to enforce properly. How do the tech inspectors know if you are running a unichip with or without boost control. For that matter, how do they know you are running a chip period[/B][/QUOTE]
They tech 'inspectors' dont know. Adhering to autoX rules is mostly a matter of honesty. I know several 1.8t drivers who chipped their cars to run much higher boost and still run STS. Its just impossible to police, especially with the huge 200+ number of cars in each event
At the local level, basic rule adherence isnt even checked for at all. At an autoX here a couple weeks ago a Type R was running R compounds in STX class. Not one of the tech inspectors noticed.
| elgorey | 04-02-2002 10:10 AM |
Another solution to consider would be the Greddy E-manage (whenever it comes out....) It is similar to a S-AFC but it tunes fuel and timing. Its also considerably cheaper than Unichip and should cost around $350
| Tangmere | 04-02-2002 11:18 AM |
OldRacer, I'll be watching you..;)
I do tech at the RMSolo autoX series out here in Colorado. Drivers are responsible for classing and policing themselves, so if they choose to hide some mods that's their choice. Tech can only catch the obvious, such as nitrous (if you have that on the car, we ask you to go home) or 17s on a WRX in DS. Like I said, the brunt of disclosure is on the drivers shoulders. In STS we tend to overlook some mods that are obvious because they're not perfomance enhancing, but technically illegal. I have an aftermarket steering wheel, somebody has a set of rims on his car that stick out a bit from the body, another has an aftermarket clutch, etc. While walking around the paddock prior to running, if we see a car that's classed wrong, we'd suggest an alternative. Last week there was an AWD Talon with boost in STS, late last year we had a supercharged Camaro and a Ram Air Firebird lined up in STS. We took care of that.
Excuse me if I'm preaching to the choir here. OldRacer, why not give the Unichip a miss? You already have a decent amount of power, I'm assuming you have a cat-back and already know you can do the up-pipe. Get a set of coil-overs and concentrate in putting that HP to the ground. Some aftermarket tires (Falken Azenis) are pretty crucial to improving your grip and braking.
Mark
STS 12
Excuse me if I'm preaching to the choir here. OldRacer, why not give the Unichip a miss? You already have a decent amount of power, I'm assuming you have a cat-back and already know you can do the up-pipe. Get a set of coil-overs and concentrate in putting that HP to the ground. Some aftermarket tires (Falken Azenis) are pretty crucial to improving your grip and braking.
Mark
STS 12
| z3coupe | 04-02-2002 01:37 PM |
Hmmm, that Greddy E-manage sounds interesting, and the price is RIGHT! Might also be easier for not being protested as well.
As for the up-pipe, I think we should all hold off again. Seems I got a mail from someone who said the Anti-Sube zealots are having a fit over this new ruling. So guess we need to wait till its actually in print. I for one, might already have gotten burnt, as I installed the GFB Pulley kit a few weeks ago, and now come to find that it does have rubber in it, and thus might be a dampner even though SoA calls it a pulley.
As for the up-pipe, I think we should all hold off again. Seems I got a mail from someone who said the Anti-Sube zealots are having a fit over this new ruling. So guess we need to wait till its actually in print. I for one, might already have gotten burnt, as I installed the GFB Pulley kit a few weeks ago, and now come to find that it does have rubber in it, and thus might be a dampner even though SoA calls it a pulley.
| OldRacer | 04-02-2002 03:04 PM |
Mark-
Appreciate what you're saying about the merits of development to get what power's there well-hooked up with the ground. I'm trying to take a good, hard look at the options that fall within the STX "box", and lay out a development plan & budget. Started this thread when it looked like there might be a straightforward way to a few extra horses (with minimal long-term engine reliability impacts) (and which would be fun for the street) which would be clearly legal under STX. Then I ran into the apparent disconnect w/ the guys at Cobb, and I wanted to run it to ground.
At this point I'm for sure planning on adding front camber adjustment plates, and steel brake lines and upgraded pads. I'm thinking seriously about the chip; waiting on firm pricing, confirmation of likely results, comfort that ChrisW's boost spiking concern won't be a problem, oh, and making sure I can get good, clear documentation as to how the chip's configured, and that it does nothing outside of STX-allowable mods- seriously, I wouldn't dream of running it w/o being up-front about it, being convinced it was legal, and being able to show that. What you say about the importance of competitors being straight-up about what they're running; agree completely! Sounds like the legality of the up-pipe's still up in the air, so sitting back to see how that pllays out. Thinking about coil overs, and also wishing somebody would get their act together and actually produce a set of adjustable strut replacements for the WRX (like Koni...).
Biggest thing I hope to be able to do some successful development work on this year is the driver; more improvement to be accessed there, I suspect, than either coil overs, or another 20 ponies.... Looking forward to seeing ya weekend after weekend after next, and running a full season.
Len
Appreciate what you're saying about the merits of development to get what power's there well-hooked up with the ground. I'm trying to take a good, hard look at the options that fall within the STX "box", and lay out a development plan & budget. Started this thread when it looked like there might be a straightforward way to a few extra horses (with minimal long-term engine reliability impacts) (and which would be fun for the street) which would be clearly legal under STX. Then I ran into the apparent disconnect w/ the guys at Cobb, and I wanted to run it to ground.
At this point I'm for sure planning on adding front camber adjustment plates, and steel brake lines and upgraded pads. I'm thinking seriously about the chip; waiting on firm pricing, confirmation of likely results, comfort that ChrisW's boost spiking concern won't be a problem, oh, and making sure I can get good, clear documentation as to how the chip's configured, and that it does nothing outside of STX-allowable mods- seriously, I wouldn't dream of running it w/o being up-front about it, being convinced it was legal, and being able to show that. What you say about the importance of competitors being straight-up about what they're running; agree completely! Sounds like the legality of the up-pipe's still up in the air, so sitting back to see how that pllays out. Thinking about coil overs, and also wishing somebody would get their act together and actually produce a set of adjustable strut replacements for the WRX (like Koni...).
Biggest thing I hope to be able to do some successful development work on this year is the driver; more improvement to be accessed there, I suspect, than either coil overs, or another 20 ponies.... Looking forward to seeing ya weekend after weekend after next, and running a full season.
Len
| Tangmere | 04-02-2002 08:23 PM |
Z3,
You're okay on the pulley. Its been cool for Subies in STS for a while now. And anyway, our engines are internally balanced, so its not a dampner or balancer per se.
Len,
Look forward to seeing you too.
Mark
STS 12
You're okay on the pulley. Its been cool for Subies in STS for a while now. And anyway, our engines are internally balanced, so its not a dampner or balancer per se.
Len,
Look forward to seeing you too.
Mark
STS 12
| KC | 04-02-2002 09:26 PM |
[QUOTE]Its been cool for Subies in STS for a while now. And anyway, our engines are internally balanced, so its not a dampner or balancer per se. [/QUOTE] Tang... that's the problem.. they ruled them ILLEGAL this year. Every subaru's crank pulley has rubber on it. Therefore, because it's not a solid piece, it's a damper... and therefore Illegal.
This is a BIIIIG bru-ha-ha on the STS mailing list.
This is a BIIIIG bru-ha-ha on the STS mailing list.
| z3coupe | 04-03-2002 01:12 AM |
NEWS NEWS NEWS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
I will post it in this forum in a few minutes - straight from Howard!
KC, Big Sky - its in the mail now - both pulley and exhaust
also in the works (KC and Sky got cc'd) is some SoA techs looking over the ground issue for us!!!!!!!!
I will post it in this forum in a few minutes - straight from Howard!
KC, Big Sky - its in the mail now - both pulley and exhaust
also in the works (KC and Sky got cc'd) is some SoA techs looking over the ground issue for us!!!!!!!!
| MNbiker | 07-07-2002 09:23 PM |
Reviving this thread, to see if anyone's been running UniChip w/o boost control in STX yet. You'd think we should get some pretty noticeable gains w/Unichip and a good turbo-back exhaust/uppipe combo.
| BIGSKYWRX | 07-07-2002 09:39 PM |
Not running it yet. Talked to Trey a couple of weeks ago about it. They are moving to Salt Lake in Oct/Nov ish, which puts them much closer to me (MT). I want it dynoed/tuned so nothing is left to chance. Trey still thinks 20 hp (and close to the same torque) is doable even w/ stock boost. I will have my exhaust system sorted by then also (need to figure where to put a high flow unit or try and move the O2 sensor downstream from the 3rd oe cat).
I think OldRacer may have had one installed. Hopefully he will respond.
Big Sky
I think OldRacer may have had one installed. Hopefully he will respond.
Big Sky
| OldRacer | 07-08-2002 08:47 AM |
Why, sure I'll respond...
I did have it installed in late April- Christian at Modern Garage in SLC. Modern is Cobb auth'd dealer.
The gains are real and noticable, and have had no problems at all. The +20 hp # seems about right (around 10%); what you'll gain will depend on what other mods you're running; at this point I'm just running K & N and SPT cat-back. With a full (STX-legal) exhaust system, you'll end up w/ more.
I start to get significant power a few hundred RPM lower, and the stock fall-off from 5500 to 7K is gone. Also switched from stock fuel cutoff at 7200 to ignition cutout at 7100.
I like it, for both auto-X and the street.
Len
I did have it installed in late April- Christian at Modern Garage in SLC. Modern is Cobb auth'd dealer.
The gains are real and noticable, and have had no problems at all. The +20 hp # seems about right (around 10%); what you'll gain will depend on what other mods you're running; at this point I'm just running K & N and SPT cat-back. With a full (STX-legal) exhaust system, you'll end up w/ more.
I start to get significant power a few hundred RPM lower, and the stock fall-off from 5500 to 7K is gone. Also switched from stock fuel cutoff at 7200 to ignition cutout at 7100.
I like it, for both auto-X and the street.
Len
| BIGSKYWRX | 07-08-2002 12:59 PM |
Len,
Glad to hear it's working out good. Looking forward to getting mine done also, hopefully early winter. I should have a full (uppipe/downpipe- a cat somehwere) exhaust when I go in. It will be nice to have both Cobb and Modern garage relatively close (real close for you). They are both very autox knowledgable, with a lot of their work gearded in that direction.
I'll be curious to see what numbers a full on STX setup will put down on dyno.
Mike
Glad to hear it's working out good. Looking forward to getting mine done also, hopefully early winter. I should have a full (uppipe/downpipe- a cat somehwere) exhaust when I go in. It will be nice to have both Cobb and Modern garage relatively close (real close for you). They are both very autox knowledgable, with a lot of their work gearded in that direction.
I'll be curious to see what numbers a full on STX setup will put down on dyno.
Mike
| OldRacer | 07-08-2002 02:23 PM |
Mike,
I'll be VERY interested in seeing dyno on a full STX Unichip setup. I'm tentatively planning on doing exhaust this winter, too (and, of course, having the Unichip re-mapped). When Christian did my install, it was w/o dyno (just lots of instrumentation attached, w/ a number of test runs).
I found Christian a REAL pleasure to deal with, and VERY knowledgeable. No question Cobb knows their stuff, too. Having them both in SLC will be great!
Len
I'll be VERY interested in seeing dyno on a full STX Unichip setup. I'm tentatively planning on doing exhaust this winter, too (and, of course, having the Unichip re-mapped). When Christian did my install, it was w/o dyno (just lots of instrumentation attached, w/ a number of test runs).
I found Christian a REAL pleasure to deal with, and VERY knowledgeable. No question Cobb knows their stuff, too. Having them both in SLC will be great!
Len
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