Borla XR1 muflers? - Pontiac GTO Forum
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post #1 of 2 (permalink) Old 07-23-2015, 09:13 PM Thread Starter
 
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Borla XR1 muflers?

anyone running these on a built pontiac? i have some on a 496bbc with dual 3.5" and they sound insane. almost a fuzz too loud in the truck cab but sound great. A friend wants to get rid of his flowmasters after he heard mine but wants to know how bad the resonation will be inside the car. For some reason the flowmaster 40 series i believe just do not sound good at all on that car ad its a 462 pushing 600 hp if anyone has any feedback that would be great.
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post #2 of 2 (permalink) Old 07-24-2015, 05:52 PM
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They are loud. Location of the mufflers (and on what car) will affect resonance. I use the Borla Pro XS which is very pleasing and quieter at lower loads but turn heads when the loud pedal is pressed.

2004 Blk/Rd M6
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  Pontiac GTO Forum > The 2004-2006 GTO > Intake and Exhaust Discussions

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