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Aftermarket Exhaust Options for GC8

Impreza


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  #1  
Old 01-19-2012, 06:01 PM
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Default Aftermarket Exhaust Options for GC8

I'm looking to install a sweet new exhaust system on my STi, and I'm looking for some input. I want something nice and loud with plenty of rumble...

What catback achieves the best bang for the buck? eBay or otherwise...
I'd love to get some pointers from the guys with the loud pipes.
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Old 01-19-2012, 06:04 PM
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Originally Posted by RawRock View Post
I'm looking to install a sweet new exhaust system on my STi, and I'm looking for some input. I want something nice and loud with plenty of rumble...

What catback achieves the best bang for the buck? eBay or otherwise...
I'd love to get some pointers from the guys with the loud pipes.
Straight-pipe. Loud and cheap. Glad I could help......
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Old 01-19-2012, 06:09 PM
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Buy any 3" turboback exhaust of your choice, make sure it has a resonator in it (so it's not too annoying on the highway).

Then, you get an electric cutout welded in somewhere after the downpipe and before the resonator. Best of both worlds. If she's still a bit too loud on the highway, just get another resonator welded in. It will sound pretty good, but then sound just nasty when you open it up.
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Old 01-19-2012, 06:11 PM
Vic-gc8 Vic-gc8 is offline
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from what i understand. the 02-07 WRX exausts will fit the GC8 without any issue.
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Old 01-19-2012, 06:16 PM
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from what i understand. the 02-07 WRX exausts will fit the GC8 without any issue.
STi too. Braden and I run full USDM HKS exhaust cause that's how we roll!
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Old 01-19-2012, 06:21 PM
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STi too. Braden and I run full USDM HKS exhaust cause that's how we roll!
Do you have the hks with the bellmouth downpipe and no resonator, or the non-bellmouth with the resonator on this blue gc8? I had the first kind my last gc8. I noticed the hks in this car is not a bellmouth downpipe, and it has a resonator. Tbh I prefer the one on this car, not as loud on the highway, but still sounds good from the outside. I'm still thinking of a cutout, they sound so damn good, great when you want a bit more loud

Last edited by Braden : 01-19-2012 at 06:23 PM.
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Old 01-19-2012, 06:28 PM
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Do you have the hks with the bellmouth downpipe and no resonator, or the non-bellmouth with the resonator on this blue gc8? I had the first kind my last gc8. I noticed the hks in this car is not a bellmouth downpipe, and it has a resonator. Tbh I prefer the one on this car, not as loud on the highway, but still sounds good from the outside. I'm still thinking of a cutout, they sound so damn good, great when you want a bit more loud
Same one as you.
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Old 01-19-2012, 06:56 PM
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I went godspeed ebay turbo back, 02-07 WRX...straight pipe...fit perfect! every hangar except for one. Also had a plug bolt in the downpipe for the o2...came with 3 different plug bolts that had tapped holes for different thread sensors!

Sounds great, not too loud at all for straight pipe...just the sweet sound of boxer! still using the gaskets it was shipped with. none blow out so far in about 25,000kms. Only problem I have with it is that it wasnt a cannon style pipe, it has a little cap in it wit a smaller hole that would rattle because the stock bolts had no lockwashers.

$300 to the door!
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Old 01-19-2012, 07:03 PM
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I went godspeed ebay turbo back, 02-07 WRX...straight pipe...fit perfect! every hangar except for one. Also had a plug bolt in the downpipe for the o2...came with 3 different plug bolts that had tapped holes for different thread sensors!

Sounds great, not too loud at all for straight pipe...just the sweet sound of boxer! still using the gaskets it was shipped with. none blow out so far in about 25,000kms. Only problem I have with it is that it wasnt a cannon style pipe, it has a little cap in it wit a smaller hole that would rattle because the stock bolts had no lockwashers.

$300 to the door!
Do you have a link to this setup? Sounds decent.
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Old 01-19-2012, 08:01 PM
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That was when I installed it. I don't have a link for ebay, just don't buy the downpipe and the catback from seperate dealers...I suspect one of my pieces wasnt really godspeed, just some other no name brand. just look for turbo back exhausts, 2002-2007wrx. You can't use just the cat back because the ends won't match. Make sure its stainless steel and manderal bent! Don't expect the gaskets to last long and losing the turbo duct piece.

http://forums.jdmvip.com/Gc8_quot200...Impreza-3329-t
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