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post #91 of 105 (permalink) Old 06-26-2011, 05:38 AM Thread Starter
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Join Date: May 2008
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Car Year: 2004
Car Model: fxt A/T
Quote:
Originally Posted by Kumachn View Post
Measured an '06 STi Exhaust I just bought:

...........................FXT.............STI
Tip:....................6 5/8"..........7 1/2"
Muffler:..............17 1/8"........16 1/2"
Overall length:.....46 1/2"........
midpipe...............49 3/4"........49 1/2"
Awesome! Thank you for your measurements, if only we had more to compare against.

2004 FXT A/T (vf43 08 STI TMIC)
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post #92 of 105 (permalink) Old 03-21-2012, 11:31 PM
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I have the axelback, will the down or midpipe make a difference? How about the cat converter?
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post #93 of 105 (permalink) Old 03-22-2012, 10:24 AM Thread Starter
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he downpipe is exactly the same (both pieces of it). The midpipe which is what would make it a full catback has a smaller resonator and will give you a little more low bass. As for the catalytic converter they are the same as the two that are in your downpipe sections.

2004 FXT A/T (vf43 08 STI TMIC)
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post #94 of 105 (permalink) Old 11-07-2012, 10:47 AM
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Anyone with an STi catback gone from an aftermarket DP back to the stock DP? Currently at protune stage 2 with Cobb catted DP - considering removing the Cobb and going back to cobb stage 1 due to persistent wastegate flutter. Just wondering if going back to the stock downpipe will also reduce the annoying bassy vibration (subwoofer effect) of the sti catback, or if this noise is more connected with the smaller resonator on the sti midpipe. If I do go back to Stage 1, trying to decide if I keep all or part of the sti catback. My car is an 04 XT with a 2007 STi catback. Do like the rumble and look of the catback, just not the sub effect. No fitment issues with kb xl hangers.
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post #95 of 105 (permalink) Old 11-15-2012, 04:42 PM
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Update: STi midpipe removed, FXT midpipe put back on, bolted to STi axleback .....now no more annoying bass drone/buzz at low revs, just the good deep rumble I was looking for. Wish I could get rid of the wastegate flutter but it is easier to live with now as my eardrums arent bleeding at every red light. Seems most folks fit the entire STi catback with no issues, but my car didnt like it. Length and separation from bumper perfect with KB XL hangers.
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post #96 of 105 (permalink) Old 01-06-2013, 08:41 AM
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Hey guys,

thinking of getting a mint Spec C Type RA-R Stainless steel Catback exhaust...just wondering if you guys know much about it since the net doesn't have much. $350 is the price...thoughts? Thanks

MY08 SG FXT | MY10 DGM FX | MY09 QSM Legacy 3.0R

Last edited by White Comet; 01-06-2013 at 08:50 AM.
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post #97 of 105 (permalink) Old 01-09-2013, 10:30 PM
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the STI cat-back becomes much louder with a aftermarket downpipe & catless. My 04 XT has 05 STI cat-back, its semi-quiet when driven gently, but if i push it it gets much louder... one of my friends who lives on a curvy road said they heard my car coming from quite a bit away, and that was over the noise of the 2009 328i i was chasing (if youve ever heard one, they are actually pretty loud at high rpms). In my opinion, its a perfect setup for a sleeperish car like an XT.
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post #98 of 105 (permalink) Old 01-10-2013, 10:37 AM
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Quote:
Originally Posted by amorgan93 View Post
the STI cat-back becomes much louder with a aftermarket downpipe & catless. My 04 XT has 05 STI cat-back, its semi-quiet when driven gently, but if i push it it gets much louder... one of my friends who lives on a curvy road said they heard my car coming from quite a bit away, and that was over the noise of the 2009 328i i was chasing (if youve ever heard one, they are actually pretty loud at high rpms). In my opinion, its a perfect setup for a sleeperish car like an XT.
mine was quiet..3" catless DP w/ GS 3"-2.5" adapter (with gaskets on both side of the adapter) into a stock STI cat back with STI resonator...it was relatively quiet

I think if the resonator was removed in teh cat back, it would be a lot louder...
Joe
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post #99 of 105 (permalink) Old 01-10-2013, 07:12 PM
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Cobb Catted dp, deleted resonator, straight 2.5'' back 05 Sti muffler. It's got a nice light sound, turbo whistle can be heard at the tailpipe. The Sti tip had to be cut and extended to clear to bumper properly. I had the Sti pipe cut right off and just had one custom fit to suit.
My wife drives it daily and hasn't complained about any overly annoying sound. I personally would like it louder. But it's her daily driver, and only my weekender.
No up pipe yet. If it gets louder, I always have the option to add in a resonator.

DR colt
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post #100 of 105 (permalink) Old 04-19-2013, 07:10 AM
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Quote:
Originally Posted by White Comet View Post
Hey guys,

thinking of getting a mint Spec C Type RA-R Stainless steel Catback exhaust...just wondering if you guys know much about it since the net doesn't have much. $350 is the price...thoughts? Thanks

BUY IT! specially as its S/S. i got my 03 STi system for $150! (AUD)

2003 2.5X SG- 'Scooby'-MINE
2013 CRF250L- 'Iron Horse'-PLAN B
2009 Vmoto Milan- 'Pinky'- HERS
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post #101 of 105 (permalink) Old 05-02-2013, 03:45 PM
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Maybe I missed it, but what are people doing about the third hanger on the muffler (the one on the rear). It seems like it is too short to reach the hanger on my FXT. or maybe it's my muffler?
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post #102 of 105 (permalink) Old 05-02-2013, 03:52 PM
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Quote:
Originally Posted by crxgator View Post
Maybe I missed it, but what are people doing about the third hanger on the muffler (the one on the rear). It seems like it is too short to reach the hanger on my FXT. or maybe it's my muffler?
Ignore it. With stiff hangers and a solid connection to the midpipe the muffler won't go anywhere.

If you must use it, cut it off and weld it back on so it reaches the chassis hanger.
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post #103 of 105 (permalink) Old 05-08-2013, 12:09 PM
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Does anyone know if a JDM STI GD 7/8 (02-05) catback is the same as the USDM STI catbacks you guys are fitting on your XT's?
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post #104 of 105 (permalink) Old 06-12-2013, 01:14 AM
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Picked up my 06 STI exhaust and waiting on the XL 15MM hangers from kartboy and we should be good to go! :)
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post #105 of 105 (permalink) Old 09-28-2013, 12:35 AM
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4.5in tailpipe on Sti?!

Hi chaps!
Just picked up a really nice Sti turbo back system but someone's 'adapted' a 4.5in tailpipe onto the back box! What effect will this have, apart from meaning I need to cut a hole in my bumper or chop it off and go back to a 2.5" tailpipe?? Noisier??
Also, I'm currently running a standard XT system with a de-cat midpipe. I can't separate the mid pipe cat from the resonator on the Sti system like I have on my current one so whats the best system to run, or what combination of the two is best?

Cheers,

Iain J
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  Subaru Forester Owners Forum > Technical Forums and Vehicle Assistance > Engine and Exhaust > EJ25 - 2.5L Turbocharged (2004-2013)

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