Which Exhaust Good To Run
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Joined: Jul 2004
Posts: 132
Originally Posted by Island Style
APS 3" or 3.5"
3" gives you the option to add a Cat...you can swap out the cat and replace it with a straight pipe by just swapping it in the downpipe section...Very nice if you might be moving to where emissions is checked...
3.5" monster...this is what I want...
3" gives you the option to add a Cat...you can swap out the cat and replace it with a straight pipe by just swapping it in the downpipe section...Very nice if you might be moving to where emissions is checked...
3.5" monster...this is what I want...
It's on it's way from Australia... Along with a bunch of other APS STi/WRX goodies like a 4.5" core FMIC, CAI, and a SR55 dual BB Turbocharger.
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iTrader: (66)
Joined: Sep 2003
Posts: 3,615
From: Windward, Oahu
Car Info: 3 Sleepers: 05 LGT, 05 FXT, 02 WRX
Hey Orville,
What are you looking for in an exhaust...the helix that you have is pretty mean sounding...
The exhaust I have had experiences with are:
1. HKS High Power (cousin has one with 3" piping, stock downpipe, no resonator)...sounds good, higher pitched than the helix you have.
2. HKS Carbon Ti...with PDE Downpipe, stock manifold...throaty, get's louder with rpm...quieter than my cousins due to the resonator present on the Carbon Ti...starts off with a lower tone then quickly gets a higher tone with rpm.
3. HKS Carbon Ti with PDE Downpipe and XXTuning Header...raspy sound, higher tone, much less in the way of the Subaru Rumble...didn't care for the sound with the header.
4. B&B with PDE and stock Manifold...very deep rumble, sounds mean from the time you start it up, to the 7K! This is one of the lowest sounding exhausts I've heard for the STI...it gets pretty loud as you get on it but not nearly as loud as the Blitz Nur Spec. It, by itself, smooths out the Subaru rumble caused by the unequal length stock manifold.
5. B&B with PDE and XXTuning Header...Perfect...Exhaust note is smoothed out, really not very loud at all...but very noticable raspy, lower tone...WRC sounding when on the gas...like a Harley at idle...I like this set up but I've heard the APS 3.5" TBE with the GT SPec II Header (same as XXTuning) and it sounds mean!
6. Just for the heck of it, I installed my stock STI catback on my PDE downpipe...that lasted all of one night...it's actually not bad...when you get on it, there is this raspy note to it and I can still hear the turbo spool but it's waaay to quiet for me...I also felt the restriction of the 2.5" piping...this was with the header also so it may sound more rumbly with the stock manifold...
The exhaust I have had experiences with are:
1. HKS High Power (cousin has one with 3" piping, stock downpipe, no resonator)...sounds good, higher pitched than the helix you have.
2. HKS Carbon Ti...with PDE Downpipe, stock manifold...throaty, get's louder with rpm...quieter than my cousins due to the resonator present on the Carbon Ti...starts off with a lower tone then quickly gets a higher tone with rpm.
3. HKS Carbon Ti with PDE Downpipe and XXTuning Header...raspy sound, higher tone, much less in the way of the Subaru Rumble...didn't care for the sound with the header.
4. B&B with PDE and stock Manifold...very deep rumble, sounds mean from the time you start it up, to the 7K! This is one of the lowest sounding exhausts I've heard for the STI...it gets pretty loud as you get on it but not nearly as loud as the Blitz Nur Spec. It, by itself, smooths out the Subaru rumble caused by the unequal length stock manifold.
5. B&B with PDE and XXTuning Header...Perfect...Exhaust note is smoothed out, really not very loud at all...but very noticable raspy, lower tone...WRC sounding when on the gas...like a Harley at idle...I like this set up but I've heard the APS 3.5" TBE with the GT SPec II Header (same as XXTuning) and it sounds mean!
6. Just for the heck of it, I installed my stock STI catback on my PDE downpipe...that lasted all of one night...it's actually not bad...when you get on it, there is this raspy note to it and I can still hear the turbo spool but it's waaay to quiet for me...I also felt the restriction of the 2.5" piping...this was with the header also so it may sound more rumbly with the stock manifold...
Registered User
Joined: Nov 2004
Posts: 361
From: Ewa Beach, Hawaii...Current Best Time: 12.59 @ 107.48mph (108.47 best mph) in Hawaiis humid weather! w/ stock turbo&intercooler
Car Info: 2004 STi.....stock turbo/intercooler/cat-back, aftermarket intake/downpipe/piggyback
I got a Blue STi also....Im pretty happy with my setup. My exhaust is adjustable from almost stock quiet....to wide open loud by remote control! I have the QTP downpipe w/ the stock STi exhaust.
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