BEST DOWNPIPE Letme here
1.Helix-not the best out of the downpipes, but one of the best for its price.
2. No, the EGT should be in the exhaust manifold.
3. Yes, im not sure how much.
4. Catless(1k miles+) still no CEL. No O2 stimulator.
Jay
2. No, the EGT should be in the exhaust manifold.
3. Yes, im not sure how much.
4. Catless(1k miles+) still no CEL. No O2 stimulator.
Jay
Registered User
Joined: Nov 2002
Posts: 673
From: Lake Forest, Calfornia
Car Info: 2004+ Two Tone Green
1. helix ( great design, affordable, simple)
2. yes it has one, they all do. one before the turbo, one after
3. if you increase flow, (no cats) you get faster spool, more power
4. use a resistor and no cel
1. pde ( average in price, well made, good but no bellmouth)
2. yes it has one, they all do. one before the turbo, one after
3. if you increase flow, (no cats) you get faster spool, more power
4. i never ran check light with the pde.
2. yes it has one, they all do. one before the turbo, one after
3. if you increase flow, (no cats) you get faster spool, more power
4. use a resistor and no cel
1. pde ( average in price, well made, good but no bellmouth)
2. yes it has one, they all do. one before the turbo, one after
3. if you increase flow, (no cats) you get faster spool, more power
4. i never ran check light with the pde.
Guest
Posts: n/a
TurboXS - 4" to 3" tapered design with bellmouth. Good quality. You can get with hi-flow cat or racepipe - and can swap the two easily. Reasonable price.
Vishnu Performance - 3" with divorved wastegate. Good quality. A little pricy.
Perrin Performance - 3" with semi divorved wastegate. Good pipe for the money. Offer a version with and without cat.
And none of them have EGT bungs. You want your EGT before the turbo, not after. Now they should all have O2 bungs.
Any downpipe that removes a cat or more can throw a cat inefficency CEL. If you get one there are many cheap fixes out there.
Expect somewhere between 20-30HP depending on other mods and your ECU.
Vishnu Performance - 3" with divorved wastegate. Good quality. A little pricy.
Perrin Performance - 3" with semi divorved wastegate. Good pipe for the money. Offer a version with and without cat.
And none of them have EGT bungs. You want your EGT before the turbo, not after. Now they should all have O2 bungs.
Any downpipe that removes a cat or more can throw a cat inefficency CEL. If you get one there are many cheap fixes out there.
Expect somewhere between 20-30HP depending on other mods and your ECU.
Registered User
iTrader: (1)
Joined: Feb 2003
Posts: 125
From: Goleta,Ca
Car Info: 2002/2.5/sr40/400hp
Downpipe
http://www.airpowersystems.com.au/wrx/exhaust.htm
Simply awesome DP.
3" down pipe w/cat $546.00
3" downpipe no/cat $399.00
Dave@wannaberacing.net
Simply awesome DP.
3" down pipe w/cat $546.00
3" downpipe no/cat $399.00
Dave@wannaberacing.net
Registered User
iTrader: (1)
Joined: Nov 2002
Posts: 1,134
From: G35 Coupe (FOR SALE)
Car Info: G35 Coupe (FOR SALE)
Originally posted by 4npower
Has any one tried the INVAIDIA DP ? And where can i get the HELIX ?
Has any one tried the INVAIDIA DP ? And where can i get the HELIX ?
Guest
Posts: n/a
I know this is kinda off this threads subject but rather than making a completly new thread i was wondering if someone can jsut give me a link to some site that shows what all the down pipes, up pipes , and all that other exhaust realted stuff is with some kind of graphic illustration. Ive read about them before and forgot exactly what the the exhaust parts are. So i figure that an illustration would bang it into my head. Thanks 
Guest
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mattr762 ? or 792 or whatever is matt randolph.
Outstanding site (dare I say bump?, whatever that means)
www.mattrandolph.com - has everything you are looking for.
Also check out subarureviews.com
Outstanding site (dare I say bump?, whatever that means)
www.mattrandolph.com - has everything you are looking for.
Also check out subarureviews.com
Guest
Posts: n/a
anyone using an HKS downpipe...
I have the HKS catback system from the THP magizine article it was one of the top exhausts. but I haven't heard a single word about the downpipe.
I'm just looking for the the downpipe that will make the most power at the lowest RPM (dont even care if it has a cat or not)
I have the HKS catback system from the THP magizine article it was one of the top exhausts. but I haven't heard a single word about the downpipe.
I'm just looking for the the downpipe that will make the most power at the lowest RPM (dont even care if it has a cat or not)
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iTrader: (14)
Joined: Nov 2001
Posts: 14,221
From: Peoples Republik of Kalifornia
Car Info: 05 H2 SUT, 45 GPW, 10 Murano, 13 Boss 302
Originally posted by Stevied
What downpipes allow you to use the stock 3rd cat+back?
1. TurboXs
2
3
4
5
What downpipes allow you to use the stock 3rd cat+back?
1. TurboXs
2
3
4
5
3. ScoobySport
4. Stromung
5. Bosal
There may be others