| jsavage | 08-09-2005 11:23 PM |
Any performance issue with swapping a STi scoop for WRX?
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Looking for smaller scoop...I assume there won't be much of a performance/cooling loss going to a WRX scoop considering the 06's are tiny. Any thoughts?
| mysteek2 | 08-09-2005 11:29 PM |
I've heard a few things about air flow restrictions, not enough to affect the engine a lot. I saw some threads on this a while ago. If I find any of them I'll put them up. Why the smaller scoop?
| jsavage | 08-10-2005 10:24 AM |
gettin rid of the wing and want to balance out the car (visually).
| ToesWRX | 08-10-2005 10:38 AM |
the sti scoop is bigger than the wrx scoop by 2-3 inches, you will get some decreased air flow into the intercooler, but I don't know if it would be significant.
| mysteek2 | 08-10-2005 05:22 PM |
[QUOTE=jsavage]gettin rid of the wing and want to balance out the car (visually).[/QUOTE]
Cool, post some pics once if you swap them out. I'm still debating on removing the wing on mine or not.
Cool, post some pics once if you swap them out. I'm still debating on removing the wing on mine or not.
| SparkysJDMSpeedWagon | 08-10-2005 05:35 PM |
Maybe you could just get a WRX wing, and keep the STi scoop? There are a few cars on here that have that, and they look great!
| jsavage | 08-10-2005 10:20 PM |
Not a huge fan of the WRX wing. I already have a WRX style wing which is a custom job I did on the STi wing. Just not digging certain angles of it.
Maybe I should just keep it.?
PIC:
[IMG]http://www.we-todd-did-racing.com/wetoddimage.wtdr/wOTYzNjUzNnM0MTNkZmQzMXk1NDE%3D.jpg[/IMG]
Maybe I should just keep it.?
PIC:
[IMG]http://www.we-todd-did-racing.com/wetoddimage.wtdr/wOTYzNjUzNnM0MTNkZmQzMXk1NDE%3D.jpg[/IMG]
| jgp | 08-10-2005 10:35 PM |
I'm in the process of doing this swap. will the WRX hood scoop, and seal as well as splitters fit with the sti intercooler or do you need an aftermarket one like zerosports? and where are you getting your wrx hood scoop...new or used?
| jsavage | 08-10-2005 11:15 PM |
the install should be an easy direct swap...
I will probably just post a local thread looking for a trade from a WRX owner.
I will probably just post a local thread looking for a trade from a WRX owner.
| minx1225 | 08-10-2005 11:36 PM |
I'd rather keep the Sti scoop... Maybe because I'm a wrx owner , I like the spoiler and the sti scoop. I've recently got the sti trunk and spoiler and loving them...
They give charismatic look??? Just my thought... Keep the scoop...
The pic above looks sweet as is..
They give charismatic look??? Just my thought... Keep the scoop...
The pic above looks sweet as is..
| animes2k | 08-11-2005 12:27 AM |
If you go for it, I'd opt for removing the STi badges. Then you've got an STi (wolf) in WRX's (sheep's) clothing...
but that's just what *I* would do :)
but that's just what *I* would do :)
| dropmech | 08-11-2005 01:01 AM |
Going to a smaller scoop will cause knock at high sustained speeds. The scoop is that big for a reason. But, do what makes your eyes happy.
| Sooby1 | 08-11-2005 02:06 AM |
Is the STI intercooler bigger than the WRX's? If so then you'll definately need the bigger scoop. You'll hurt performance if you for the smaller one.
Another option is to go front mount, then you can get rid of the scoop completely.
Another option is to go front mount, then you can get rid of the scoop completely.
| Hummer | 08-11-2005 12:01 PM |
I had the wrx scoop on for a week before my fmic went in and I had no problems. I turned down my boost a little though to be on the safe side.
[img]http://cerberusdigital.com/images/Side.JPG[/img]
[img]http://cerberusdigital.com/images/Side.JPG[/img]
| jsavage | 08-11-2005 05:53 PM |
[QUOTE=dropmech]Going to a smaller scoop will cause knock at high sustained speeds. The scoop is that big for a reason. But, do what makes your eyes happy.[/QUOTE]
Don't really see any justification here...but to each his own.
Any comments on the very small 06 STi scoop with the same intercooler?
Don't really see any justification here...but to each his own.
Any comments on the very small 06 STi scoop with the same intercooler?
| dropmech | 08-12-2005 12:14 PM |
[QUOTE=jsavage]Don't really see any justification here...but to each his own.
Any comments on the very small 06 STi scoop with the same intercooler?[/QUOTE]
I'm talking over 100mph. The hot air from the turbo is cooled less because at some point, the airflow starts going over the hood scoop instead of through it. Which in turn causes knock. For me, it started happening at about 120. So, to each his own.
Any comments on the very small 06 STi scoop with the same intercooler?[/QUOTE]
I'm talking over 100mph. The hot air from the turbo is cooled less because at some point, the airflow starts going over the hood scoop instead of through it. Which in turn causes knock. For me, it started happening at about 120. So, to each his own.
| jgp | 08-14-2005 11:31 AM |
so hummer, was the wrx hood scoop and seal a direct fitment to the sti or did you modify anything? BTW, which FMIC is in your car, that looks good.
| Mr. Sadface | 08-14-2005 06:26 PM |
Here's a question... Would there be any issues going the other way (putting the larger STI scoop on a WRX)? I've been contemplating this, but wanted to make sure the extra airflow wasn't going to do more harm that good.
| Call_me_Tom | 08-14-2005 06:51 PM |
[QUOTE=dropmech]I'm talking over 100mph. The hot air from the turbo is cooled less because at some point, the airflow starts going over the hood scoop instead of through it. Which in turn causes knock. For me, it started happening at about 120. So, to each his own.[/QUOTE]
I've heard the same thing but I've yet to see anyone post any proof or testing on this.
I say swap to the WRX scoop if that is what you want.
I've heard the same thing but I've yet to see anyone post any proof or testing on this.
I say swap to the WRX scoop if that is what you want.
| andrew12 | 08-14-2005 06:55 PM |
nope. wont do any harm at all... more airflow = happier intercooler.
btw, the problem with high speeds has only been a proven issue on 02/03's and its is nomrally an 85-90+ mph for sustained amount of time.
the 04/05's are fine either way...
chile
btw, the problem with high speeds has only been a proven issue on 02/03's and its is nomrally an 85-90+ mph for sustained amount of time.
the 04/05's are fine either way...
chile
| dropmech | 08-14-2005 08:14 PM |
Why do you think Subaru went to a larger scoop for 04-05? To prevent what happened on the 02-03. And with an STi, that has an even bigger intercooler than the WRX, a smaller scoop is just stupid.
| Call_me_Tom | 08-14-2005 08:25 PM |
[QUOTE=dropmech]Why do you think Subaru went to a larger scoop for 04-05? To prevent what happened on the 02-03. And with an STi, that has an even bigger intercooler than the WRX, a smaller scoop is just stupid.[/QUOTE]
Ok...then why did Subaru go with a smaller scoop on the '06 STI's?
Your point would be a good assumption if it wasn't for this valid flaw.
Ok...then why did Subaru go with a smaller scoop on the '06 STI's?
Your point would be a good assumption if it wasn't for this valid flaw.
| jay25RS | 08-14-2005 08:36 PM |
[QUOTE=jsavage]Don't really see any justification here...but to each his own.
Any comments on the very small 06 STi scoop with the same intercooler?[/QUOTE]
The bug-eye style wrx's had a problem with the airflow being diverted over the hood scoop. The 2004-2005's were not afflicted by this problem... That being said, the 2006 STI most likely has different aero dynamics than the bug eyes and therefore doesn't run into the problems like they had.
-Jason
Any comments on the very small 06 STi scoop with the same intercooler?[/QUOTE]
The bug-eye style wrx's had a problem with the airflow being diverted over the hood scoop. The 2004-2005's were not afflicted by this problem... That being said, the 2006 STI most likely has different aero dynamics than the bug eyes and therefore doesn't run into the problems like they had.
-Jason
| dropmech | 08-14-2005 08:39 PM |
That's a great question. Mabey they have better flow characteristics for the 06. They did completely re-design the front end of the car. Maybe it actually contributes to better hood scoop air flow rather than deture(sp) it. But that really is a good question.
^^^Beat me too it.
^^^Beat me too it.
| Lachlan | 08-14-2005 09:12 PM |
GC STi's made 280hp on much smaller IC's and scoops. I'm no aero engineer but I would imagine the huge STi scoop isn't *necessary* for the power.
| dropmech | 08-14-2005 09:20 PM |
[QUOTE=Lachlan]GC STi's made 280hp on much smaller IC's and scoops. I'm no aero engineer but I would imagine the huge STi scoop isn't *necessary* for the power.[/QUOTE]
Have you read any of this thread? We aren't talking about power. We are talking about cooling air for the I/C. How the smaller scoop at high SPEEDS is no good. Not high POWER.
Have you read any of this thread? We aren't talking about power. We are talking about cooling air for the I/C. How the smaller scoop at high SPEEDS is no good. Not high POWER.
| Lachlan | 08-14-2005 09:31 PM |
Calm down there, sparky. Yes I have read the thread and have situational awareness. The reason for cooling air is getting more power.
| DrD | 08-15-2005 07:38 AM |
[QUOTE=krazyK1371]Ok...then why did Subaru go with a smaller scoop on the '06 STI's?[/QUOTE]
the 06 STi scoop isn't that small - the 06 scoops look similar to the 02/03 in design, but they are about the same size as the 02/03 STi scoop.
the 06 STi scoop isn't that small - the 06 scoops look similar to the 02/03 in design, but they are about the same size as the 02/03 STi scoop.
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