| catchthex | 04-29-2004 01:15 AM |
Rally Car Exhaust
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Does anyone know what type of exhaust system the WRX's on the rally circuit use? Those things sound amazing!
| Aphex28 | 04-29-2004 01:36 AM |
my guess is just a straightpipe and no cats
| nKoan | 04-29-2004 01:45 AM |
Yeah, probably straightpipe, no cats. I would think that it can't have cats because the anti-lag system would just muck them up in an instant (and you get the cool fireballs out the tailpipe).
But, if you look closely, the exhaust on the WRC car is on the passenger side, not on the drivers side like the production WRX. My guess is that it is a prodrive specially fabricated exhaust for the car. You probably can't buy the exact exhaust (and you wouldn't want to considering that you would also need to buy a new rear bumper) but you can buy something very similar.
But, if you look closely, the exhaust on the WRC car is on the passenger side, not on the drivers side like the production WRX. My guess is that it is a prodrive specially fabricated exhaust for the car. You probably can't buy the exact exhaust (and you wouldn't want to considering that you would also need to buy a new rear bumper) but you can buy something very similar.
| Kostamojen | 04-29-2004 01:47 AM |
See: Miss-firing system
Also see: No you cant use it on your car
Also see: No you cant use it on your car
| Honkey3k | 04-29-2004 01:56 AM |
Also See again: It wouldnt pass smog
| Quack | 04-29-2004 07:44 AM |
from SWRT.com:
"Ceramic coated, lagged with fire-proof material and aluminium covered. Fitted with two, three-way catalytic converters"
"Ceramic coated, lagged with fire-proof material and aluminium covered. Fitted with two, three-way catalytic converters"
| Thumper23 | 04-29-2004 09:51 AM |
[QUOTE][i]Originally posted by Quack[/i]
[B] from SWRT.com:
"Ceramic coated, lagged with fire-proof material and aluminium covered. Fitted with two, three-way catalytic converters" [/B][/QUOTE]
and costs about as much as a WRX
[B] from SWRT.com:
"Ceramic coated, lagged with fire-proof material and aluminium covered. Fitted with two, three-way catalytic converters" [/B][/QUOTE]
and costs about as much as a WRX
| mbiker97 | 04-29-2004 10:03 AM |
[QUOTE][i]Originally posted by catchthex[/i]
[B] Does anyone know what type of exhaust system the WRX's on the rally circuit use? Those things sound amazing! [/B][/QUOTE]
We have 2 different WRXs at my shop right now. One is a SCCA ProRally car and the other was at the Rally de Mexico. They are both version 7 LHD models. Both have the 2 stock cats (remember no stock uppipe cat) and run straight pipe. I believe both these cars are in slightly lower classes, but since your question was kind of open ended this is what you get.
The WRC cars have cats, but they put them as far from the turbo as possible.
[B] Does anyone know what type of exhaust system the WRX's on the rally circuit use? Those things sound amazing! [/B][/QUOTE]
We have 2 different WRXs at my shop right now. One is a SCCA ProRally car and the other was at the Rally de Mexico. They are both version 7 LHD models. Both have the 2 stock cats (remember no stock uppipe cat) and run straight pipe. I believe both these cars are in slightly lower classes, but since your question was kind of open ended this is what you get.
The WRC cars have cats, but they put them as far from the turbo as possible.
| Subie Gal | 04-29-2004 10:52 AM |
my SCCA ProRally car has (from [url]www.ionperformance.com[/url])
stock up pipe
4" bellmouth downpipe into 3" high flow cat
then 3" into 2.5" straight out the back
All rally cars have cats. Required per the rules...
Yep... it's loud... :D
Jamie
[url]www.subiegal.com[/url]
[img]http://www.subiegal.com/images/rallies/oregonrally2004/subaru_rally_wagon3.jpg[/img]
stock up pipe
4" bellmouth downpipe into 3" high flow cat
then 3" into 2.5" straight out the back
All rally cars have cats. Required per the rules...
Yep... it's loud... :D
Jamie
[url]www.subiegal.com[/url]
[img]http://www.subiegal.com/images/rallies/oregonrally2004/subaru_rally_wagon3.jpg[/img]
| DrBiggly | 04-29-2004 11:01 AM |
Cool shot! I see yellow flames....
| afpdl | 04-29-2004 11:20 AM |
[QUOTE][i]Originally posted by nKoan[/i]
[B] Yeah, probably straightpipe, no cats. I would think that it can't have cats because the anti-lag system would just muck them up in an instant (and you get the cool fireballs out the tailpipe).
[/B][/QUOTE]
They got to be street legal to compete usually. They just go through alot of cats if they get screwed up.
[B] Yeah, probably straightpipe, no cats. I would think that it can't have cats because the anti-lag system would just muck them up in an instant (and you get the cool fireballs out the tailpipe).
[/B][/QUOTE]
They got to be street legal to compete usually. They just go through alot of cats if they get screwed up.
| LyveWRX | 04-29-2004 01:03 PM |
When I was at Sno*Drift working starts this year Travis Pastrana's exaust had that evil red glow from having the cat about 4" back from the end of the pipe.
nick
nick
| nKoan | 04-29-2004 01:56 PM |
[QUOTE][i]Originally posted by afpdl[/i]
[B] They got to be street legal to compete usually. They just go through alot of cats if they get screwed up. [/B][/QUOTE]
Totally forgot about that point. Thanks for clearing that up.
[B] They got to be street legal to compete usually. They just go through alot of cats if they get screwed up. [/B][/QUOTE]
Totally forgot about that point. Thanks for clearing that up.
| Recce01 | 04-29-2004 02:29 PM |
[QUOTE][i]Originally posted by catchthex[/i]
[B] Does anyone know what type of exhaust system the WRX's on the rally circuit use? Those things sound amazing! [/B][/QUOTE]
PDE makes a Rally specific downpipe, you may want to check it out at [url]www.pde-usa.com[/url] .
[B] Does anyone know what type of exhaust system the WRX's on the rally circuit use? Those things sound amazing! [/B][/QUOTE]
PDE makes a Rally specific downpipe, you may want to check it out at [url]www.pde-usa.com[/url] .
| mbiker97 | 04-29-2004 02:48 PM |
[QUOTE][i]Originally posted by Recce01[/i]
[B] PDE makes a Rally specific downpipe, you may want to check it out at [url]www.pde-usa.com[/url] . [/B][/QUOTE]
Huh? The only downpipe I see is a regular old catless downpipe. Nothing special.
[B] PDE makes a Rally specific downpipe, you may want to check it out at [url]www.pde-usa.com[/url] . [/B][/QUOTE]
Huh? The only downpipe I see is a regular old catless downpipe. Nothing special.
| afpdl | 04-29-2004 02:52 PM |
[QUOTE][i]Originally posted by mbiker97[/i]
[B] Huh? The only downpipe I see is a regular old catless downpipe. Nothing special. [/B][/QUOTE]
They make a catted downpipe and a downpipe with removable cat. You just have to scroll down.
Oddly enough their "rally spec" downpipe with extra protection is catless.
[B] Huh? The only downpipe I see is a regular old catless downpipe. Nothing special. [/B][/QUOTE]
They make a catted downpipe and a downpipe with removable cat. You just have to scroll down.
Oddly enough their "rally spec" downpipe with extra protection is catless.
| GravelRash | 04-29-2004 08:33 PM |
If you see a shot of the WRC Subarus on stage from an angle that gives a good look into the exhaust you can see a CAT glowing red, maybe a foot upstream.
Other WRC cars seem to be similar...
Other WRC cars seem to be similar...
| EJ25T | 04-29-2004 08:53 PM |
Guys, I have a good pic of the WRC exhaust that I took from the 04 Chicago AutoShow.. I hope this pic helps. Looks so mean in real life! The muffler has a quick release spring loaded clip, as you can see from the pic; also it has a special coating( more like a cermic look)..
[IMG]http://www.we-todd-did-racing.com/wetoddimage.wtdr/i=wMjcxMTQ0NnM0MTNkZmQzMXk1NDE%3D[/IMG]
[IMG]http://www.we-todd-did-racing.com/wetoddimage.wtdr/i=wMjcxMTQ0NnM0MTNkZmQzMXk1NDE%3D[/IMG]
| Cosworth | 04-30-2004 12:02 AM |
Here are some pics i took at the 2003 NY auto show. You can see that there are 2 pipes going into the rear muffler. Looking down the tailpipe, you can see a catalyst honeycomb offset to the right. Perhaps there are two passages though the muffler, one that is "straight pipe" and another that is routed though that catalyst. Unique way of getting arount the rule perhaps.
[IMG]http://69.141.176.242/NY_Autoshow/2003/images/DCP_1250.jpg[/IMG]
[IMG]http://69.141.176.242/NY_Autoshow/2003/images/DCP_1251.jpg[/IMG]
[IMG]http://69.141.176.242/NY_Autoshow/2003/images/DCP_1258.jpg[/IMG]
[IMG]http://69.141.176.242/NY_Autoshow/2003/images/DCP_1250.jpg[/IMG]
[IMG]http://69.141.176.242/NY_Autoshow/2003/images/DCP_1251.jpg[/IMG]
[IMG]http://69.141.176.242/NY_Autoshow/2003/images/DCP_1258.jpg[/IMG]
| WRXedUSA | 04-30-2004 12:17 AM |
Sweet pics.
That cat all the way back makes for some nice backfires.
That cat all the way back makes for some nice backfires.
| brentlz | 04-30-2004 01:48 AM |
This is what was hanging under a ProRally WRX (my memory fails as to who) at Rim '02: no Cats nor mufflers in sight...only a tiny resonator.
[IMG]http://lz.dyndns.org/brent/2002-05-05/dscn0398.jpg[/IMG]
The Prodrive/WRC prepped cars are a different beast...as previously noted, their exhaust exits on the opposite (right) side of the car from the factory exhaust. This is from an '02 car:
[IMG]http://lz.dyndns.org/brent/2002-07-08/DSCN0057.JPG[/IMG]
Brent.
[IMG]http://lz.dyndns.org/brent/2002-05-05/dscn0398.jpg[/IMG]
The Prodrive/WRC prepped cars are a different beast...as previously noted, their exhaust exits on the opposite (right) side of the car from the factory exhaust. This is from an '02 car:
[IMG]http://lz.dyndns.org/brent/2002-07-08/DSCN0057.JPG[/IMG]
Brent.
| afpdl | 04-30-2004 02:00 AM |
[QUOTE][i]Originally posted by Cosworth[/i]
[B] Here are some pics i took at the 2003 NY auto show. You can see that there are 2 pipes going into the rear muffler. Looking down the tailpipe, you can see a catalyst honeycomb offset to the right. Perhaps there are two passages though the muffler, one that is "straight pipe" and another that is routed though that catalyst. Unique way of getting arount the rule perhaps.
[/B][/QUOTE]
Interesting they may have a way of switching it from cat to open for street use and for when they are on the stage. I think they only need to be street legal during the transits not sure though.
[B] Here are some pics i took at the 2003 NY auto show. You can see that there are 2 pipes going into the rear muffler. Looking down the tailpipe, you can see a catalyst honeycomb offset to the right. Perhaps there are two passages though the muffler, one that is "straight pipe" and another that is routed though that catalyst. Unique way of getting arount the rule perhaps.
[/B][/QUOTE]
Interesting they may have a way of switching it from cat to open for street use and for when they are on the stage. I think they only need to be street legal during the transits not sure though.
| LyveWRX | 04-30-2004 07:59 AM |
US Pro-Rally has AFAIK only required Cats w/in the last 2 years, thats why the Rim '02 exaust has no cat.
nick
nick
| jprowland | 04-30-2004 09:44 AM |
Anyone who runs a rally without a cat in the US or Canada, especially the national events, is risking DQ. I've co-driven in cars that have been checked both at scrutineering and at stage starts with an infrared temperature gun.
Not that there aren't plenty of rallyists who don't gut out their cat anyway...Also Subarus have like 3 cats stock from the factory so people often remove 1 or 2.
--
JP Rowland [email][email�protected][/email]
Co-Driver, Wazoo Racing Subaru WRX, PGT
[url]http://homepage.mac.com/jeremyrowland[/url]
Not that there aren't plenty of rallyists who don't gut out their cat anyway...Also Subarus have like 3 cats stock from the factory so people often remove 1 or 2.
--
JP Rowland [email][email�protected][/email]
Co-Driver, Wazoo Racing Subaru WRX, PGT
[url]http://homepage.mac.com/jeremyrowland[/url]
| bullseye17 | 04-30-2004 10:23 AM |
Most group N cars run stock STi (catless) uppipe, stock downpipe and midpipe with gutted cats, and they will run a straightpipe on the rear with a hiflow cat right on the end of the exhaust.
| Subie Gal | 04-30-2004 10:45 AM |
[QUOTE][i]Originally posted by bullseye17 [/i]
[B]Most group N cars run stock STi (catless) uppipe, stock downpipe and midpipe with gutted cats, and they will run a straightpipe on the rear with a hiflow cat right on the end of the exhaust. [/B][/QUOTE]
exactly .... i see a LOT of guys doing that.. ;)
my car - up pipe is OE and gutted (which is allowed in PGT) - then i have a 4" bellmouth downpipe with meets a 3" Brullen High flow cat... then it's 3" center pipe flowing into 2.5" straight out the back....
so far.. .setup has worked well.
i am not 100% sure it will survive Rim tho... sits pretty low.
fingers crossed!!! :disco:
[B]Most group N cars run stock STi (catless) uppipe, stock downpipe and midpipe with gutted cats, and they will run a straightpipe on the rear with a hiflow cat right on the end of the exhaust. [/B][/QUOTE]
exactly .... i see a LOT of guys doing that.. ;)
my car - up pipe is OE and gutted (which is allowed in PGT) - then i have a 4" bellmouth downpipe with meets a 3" Brullen High flow cat... then it's 3" center pipe flowing into 2.5" straight out the back....
so far.. .setup has worked well.
i am not 100% sure it will survive Rim tho... sits pretty low.
fingers crossed!!! :disco:
| cvalle-sd | 04-30-2004 02:58 PM |
Remember all rally cars basically have to be road legal for the country the event's in - so you have to meet basic federal guidelines, and maybe those for the state, etc., that you compete in.
| extraducksauce | 04-30-2004 05:25 PM |
L'aunsport:
[url]http://www.wrc.gr.jp/launsport/index3.html[/url]
[img]http://www.wrc.gr.jp/photobbs/imp-box/img20010507135625.jpg[/img]
[img]http://www.wrc.gr.jp/photobbs/imp-box/img20001017154308.jpg[/img]
[url]http://www.wrc.gr.jp/launsport/index3.html[/url]
[img]http://www.wrc.gr.jp/photobbs/imp-box/img20010507135625.jpg[/img]
[img]http://www.wrc.gr.jp/photobbs/imp-box/img20001017154308.jpg[/img]
| RRR-K2 | 04-30-2004 08:33 PM |
Personally, I think the best rally car exhaust is the kind that automatically removes itself after the first stage ;) ;)
Matt Kennedy
[URL=http://www.RockyRoadRacing.com][COLOR=darkred]www.RockyRoadRacing.com[/COLOR][/URL]
Matt Kennedy
[URL=http://www.RockyRoadRacing.com][COLOR=darkred]www.RockyRoadRacing.com[/COLOR][/URL]
| Hondaslayer | 04-30-2004 11:49 PM |
[QUOTE][i]Originally posted by Kostamojen [/i]
[B]See: Miss-firing system
Also see: No you cant use it on your car [/B][/QUOTE]
Also see: My old car,yes you can, and no its not pleasant. :lol:
Seth,
Tell Graham I would have driven the truck to rim, but I had prior engagements.
[B]See: Miss-firing system
Also see: No you cant use it on your car [/B][/QUOTE]
Also see: My old car,yes you can, and no its not pleasant. :lol:
Seth,
Tell Graham I would have driven the truck to rim, but I had prior engagements.
| Mopho | 05-01-2004 12:08 AM |
If the original poster is refering to the sound WRC, 03 SCCA SRTUSA and Group N cars make in the WRC, the major factor as to why the cars sound so different is because of the equal length headers.
Check out this video
[URL=http://www.patrickrichard.com/videos/review-03/pat_corsica_test_loband.wmv]Patrick Richard Testing in Corsica by Keith Morison[/URL]
Check out this video
[URL=http://www.patrickrichard.com/videos/review-03/pat_corsica_test_loband.wmv]Patrick Richard Testing in Corsica by Keith Morison[/URL]
| patr | 05-01-2004 02:27 AM |
ummm, whomever said whatever they said about 'how the cats are setup in a Grp N car' is completely wrong :-)
at least, we have to run the cat in the stock place. Any car with the 'cat on the end' is in open class.
You can look at the SnoDrift videos (posted elsewhere on the internet) and it is fairly easy to see who in Grp N is running a cat and who isn't. The ones with the big flames coming out the back on the upshifts arent. (you can get flames with cats as well, however, not flames like in that video with Grp N cats in the stock position).
at least, we have to run the cat in the stock place. Any car with the 'cat on the end' is in open class.
You can look at the SnoDrift videos (posted elsewhere on the internet) and it is fairly easy to see who in Grp N is running a cat and who isn't. The ones with the big flames coming out the back on the upshifts arent. (you can get flames with cats as well, however, not flames like in that video with Grp N cats in the stock position).
| MarkA | 10-21-2004 03:27 PM |
[QUOTE=Subie Gal]exactly .... i see a LOT of guys doing that.. ;)
my car - up pipe is OE and gutted (which is allowed in PGT) - then i have a 4" bellmouth downpipe with meets a 3" Brullen High flow cat... then it's 3" center pipe flowing into 2.5" straight out the back....
so far.. .setup has worked well.
i am not 100% sure it will survive Rim tho... sits pretty low.
fingers crossed!!! :disco:[/QUOTE]
Found this thread while doing a search.
Question for ya - can you change the up pipe in PGT to any kind, just gut the stock one, or could you go to the STI one?
Thanks
my car - up pipe is OE and gutted (which is allowed in PGT) - then i have a 4" bellmouth downpipe with meets a 3" Brullen High flow cat... then it's 3" center pipe flowing into 2.5" straight out the back....
so far.. .setup has worked well.
i am not 100% sure it will survive Rim tho... sits pretty low.
fingers crossed!!! :disco:[/QUOTE]
Found this thread while doing a search.
Question for ya - can you change the up pipe in PGT to any kind, just gut the stock one, or could you go to the STI one?
Thanks
| Rallycarperson | 10-21-2004 03:39 PM |
Subie Gal, why is your axelback 2.5in not 3in?
-Mark
MAPmotors.com
-Mark
MAPmotors.com
| Duo | 10-21-2004 04:54 PM |
yea same question why is everyone going to 2.5 inch axel or cat back?
| Recce01 | 10-21-2004 06:46 PM |
Probably because there is not enough room between the diffguard and the crossmember for 3" without rattling craziness
| Recce01 | 10-21-2004 06:48 PM |
there are few companies that make a 3" system w/ sufficent ground clearance, and room for a diffguard
| Subie Gal | 10-21-2004 06:56 PM |
[QUOTE=MarkA]Found this thread while doing a search.
Question for ya - can you change the up pipe in PGT to any kind, just gut the stock one, or could you go to the STI one?
Thanks[/QUOTE]
you cannot change it (no updating or backdating of the part)
[b]has to be wrx stock up pipe[/b]
you can gut or remove the cat from it though
Jamie
Question for ya - can you change the up pipe in PGT to any kind, just gut the stock one, or could you go to the STI one?
Thanks[/QUOTE]
you cannot change it (no updating or backdating of the part)
[b]has to be wrx stock up pipe[/b]
you can gut or remove the cat from it though
Jamie
| Subie Gal | 10-21-2004 06:57 PM |
[QUOTE=Rallycarperson]Subie Gal, why is your axelback 2.5in not 3in?
-Mark
MAPmotors.com[/QUOTE]
1 - car doesnt make enough power to justify 3"
2 - backpressure can be your friend :D
3 - yes... 3" = clearance issues
Jamie
[url]www.subiegal.com[/url]
2003, 2004 NorPac PGT Rally Champion
2004 Western States PGT Rally Champion
-Mark
MAPmotors.com[/QUOTE]
1 - car doesnt make enough power to justify 3"
2 - backpressure can be your friend :D
3 - yes... 3" = clearance issues
Jamie
[url]www.subiegal.com[/url]
2003, 2004 NorPac PGT Rally Champion
2004 Western States PGT Rally Champion
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