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Old 05-28-2015, 10:14 AM   #1
Chrissarg425
Scooby Newbie
 
Member#: 389002
Join Date: Apr 2014
Location: Maryland
Vehicle:
2002 Wrx
Red

Default 2006 STI Stock DP to Catback

Hey guys,

I just picked up an 2006 STI with 52k original miles. Until I get it paid off and get enough money for Accessport and Dyno Tune, I'm trying to bolt up my Perrin Midpipe and axleback to the stock DP. I have an Invidia Catless DP but don't want overboost or boost creep issues until I get a protune. I have the correct 2.5 to 3in adaptor with donut, but the problem I'm having is that the mid pipe resonator seems in the way of the drive train. It seems the stock DP doesn't extend down far enough to bolt it up to it. Are there any adjustments I need to make to the stock DP to make it fit?

Edit: Its a perrin not nameless, sorry!

Thanks!
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Last edited by Chrissarg425; 05-28-2015 at 10:53 AM.
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Old 05-28-2015, 10:51 AM   #2
hudsonvalleybugeye
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Member#: 295068
Join Date: Sep 2011
Chapter/Region: Tri-State
Location: Rhinebeck, NY
Vehicle:
2001 forester
Aspen White

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well, assuming it is the correct fitment for your car. (update, I just looked on the nameless site and they do not list an axel back for the 02-07 wrx or the 04-07 sti.)
Anywho, if it is not a nameless product and is the correct piece for you car, uninstall the stock unit, hang all of the new parts on the hangers, then loosely bolt the entire assembly together. Start at the flanges closest to the front of the car and work your way back tightening little by little, until the whole assembly is torqued tight and lined up how you want it, check for leaks and your done! enjoy!
then again, by the looks of things if it is a nameless product, time to sell it and buy something that will fit your car.

Good luck!
P.S. pictures may help in your situation.
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Old 05-28-2015, 10:56 AM   #3
Chrissarg425
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Member#: 389002
Join Date: Apr 2014
Location: Maryland
Vehicle:
2002 Wrx
Red

Default

its perrin not nameless, my bad!. Would it be beneficial to take out the hangers on the stock downpipe to bolt the mid pipe onto it first to get a little more movement to make it easier?
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Old 05-28-2015, 10:57 AM   #4
Extreme Turbo Systems
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Location: Vancouver, WA
Vehicle:
08 STI
White

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Can you post pictures?
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Old 05-28-2015, 12:16 PM   #5
hudsonvalleybugeye
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Location: Rhinebeck, NY
Vehicle:
2001 forester
Aspen White

Default

when I had my 03 wrx, I changed catbacks quite often and I remember quite a bit of play in the hangers, as in it seemed like there was no way that the mid pipe would reach the downpipe. (stock and invidia in my case, but that should not make any difference as they should be the same length. I know turbo xs and some other companies made "shorty" down pipes and some of the turbo xs parts only fit other turbo xs parts.) they all always fit with a little muscle. If it makes it easier for you, have someone get under there (assuming you are on jack stands) to get a bolt through and threaded while you hold the midpipe and downpipe together. Once you get the bolts started, they will fit.

Again, some pics would help

Good luck!
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