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Old 08-14-2014, 06:05 PM   #1
4eat05
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Member#: 378421
Join Date: Jan 2014
Location: NC
Vehicle:
2005 Cobb Stg2+ Wrx
Platinum Silver

Default Gains from catback at stage 2?

Hey guys, I am wondering if/what the gains would be from a catback exhaust on my "stage 2" 2005 Wrx.

Right now my 05 Wrx has Cobb Sf intake/box/post maf, Perrin turbo inlet, Samco Ic hoses, Cobb catless up pipe, Cobb catted down pipe, Oem STI catback and Cobb AP stage 2 map.

I love how my Wrx sounds, its deep, rumbles, sounds awesome wot and quite the rest of the time. But, I also enjoy the way these cars sound with some aftermarket exhausts, just some are too loud.

I am curious about how much power I could possibly gain from an aftermarket catback (on top of the current mods listed above).
If its like 7hp or something I will save my $ and keep enjoying my up/dp/Sti catback.
If the Sti catback is restricting like 15+ hp/ftlbs I most likely will spend the money and put up with the extra sound (not that its a bad thing).
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Old 08-14-2014, 06:06 PM   #2
ToneWrx02
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Join Date: Feb 2010
Chapter/Region: International
Location: Goteborg, Sweden
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2002 Wrx
Silver

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No gains.

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Old 08-14-2014, 09:18 PM   #3
Ernest
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Chapter/Region: Tri-State
Location: Rockland County, NY
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2004 Stg 2 wagon AT
16 BRZ. Both silver

Default

Just noise. To some though, it is music to their ears.
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Old 08-14-2014, 09:49 PM   #4
HinshawWRX
Medium Frank
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Location: Common Sense, VA
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2020 Subaru
Outback

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Noise. But I'd bet this has NEVER been discussed before. EVER.
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Old 08-15-2014, 03:45 PM   #5
4eat05
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Platinum Silver

Default

Quote:
Originally Posted by Ernest View Post
Just noise. To some though, it is music to their ears.
I do love the way some do sound!

Quote:
Originally Posted by HinshawWRX View Post
Noise. But I'd bet this has NEVER been discussed before. EVER.
I looked and saw a bunch of discussions on gains from catback on stock Wrx.
Didnt see anything regarding Stage 2 with DP and stock catback and gains from adding a catback to the up/dp.

Are the SPT and Sti Genome catbacks 3"? Or 2.5" like my stock Sti catback?
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Old 08-15-2014, 03:57 PM   #6
Rob_STI_PNW
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2015 WRX
RED

Default

you gain noise and NO YOU DONT NEED A TUNE/RETUNE for a catback
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