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Old 07-20-2010, 08:14 AM   #1
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Join Date: Sep 2005
Posts: 17
2011 GT Cat back Exhaust?

A quick question for you guys. I just ordered a new 2011 GT. One of the first things I want to do is add a cat back exhaust. It will be either a Borla or Dynomax. My question is, does anyone know what kind of performance gains I can expect in terms of horsepower and torque?

Thanks a bunch,

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Old 07-20-2010, 10:28 AM   #2
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not much 3-5, neil peart rules
duece1019 2001 GT(4r70w)min.grey,cammed, all the bolt ons (12.932@105.22)
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Old 07-30-2011, 06:45 AM   #3
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I went with the Borla ATAK catback....sounds awesome, but a little too quiet at idle. Really screams when you get on it.
2011 Performance White 5.0
6MT / Brembos / 3:73 Gears / MGW / Borla ATAK Catback / FRPP K Springs / Koni STR.T / UPR UCA & LCA / UPR Adj. Panhard Bar / GT500 Strut Mounts / GT500 Spoiler / CS Front Fascia & Rear Diffuser / Roush Side Splitters

'97 Crystal White Cobra - Sold
'91 Titanium Frost 5.0 - Sold
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Old 07-30-2011, 10:02 PM   #4
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Next to nothing for hp. The only exhaust mod that gains any decent hp is longtube headers and removal of the cats.
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Old 08-03-2011, 02:39 AM   #5
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and deletion of resonators for straight pipe
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