Muffler swap - Pontiac GTO Forum
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post #1 of 6 (permalink) Old 08-25-2012, 02:26 PM Thread Starter
 
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Muffler swap

I want to do a muffler swap more for performance than for the sound. Was wondering just how restrictive the stock mufflers are, and what would be my best choice for performance mufflers that are not too noisy. I sure do like the sound of the spin techs I hear, but my wife may give me grief over them!

Thanks!
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post #2 of 6 (permalink) Old 08-27-2012, 09:52 AM
 
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If you are still stock the restriction will be in the mid pipes not the mufflers. Go for new LTs and mids. Any changes from cat on back will not give much of a gain, if at all.

Current: MGW-p, H-pipe, SS OTRCAI, Lovell rear springs, Eliminator shocks and Pioneer AVH-P3300BT, JBA LTs+catless mids, Drilled/Slotted rotors, Kooks Afterburners, catch can & Tune Next: ??? Wish list: Intake & TB, modest cam, UDP, gears
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post #3 of 6 (permalink) Old 08-27-2012, 03:30 PM Thread Starter
 
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If you are still stock the restriction will be in the mid pipes not the mufflers. Go for new LTs and mids. Any changes from cat on back will not give much of a gain, if at all.
By LT you mean long tube headers I take it? And the mids would be considered what exactly?
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post #4 of 6 (permalink) Old 08-27-2012, 03:54 PM
 
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Long tubes, yes. The mids are the set of pipes after the header collectors, have the catalytic convertors attached and connects to the resonator (the single muffler looking thing under the middle of the car).

Current: MGW-p, H-pipe, SS OTRCAI, Lovell rear springs, Eliminator shocks and Pioneer AVH-P3300BT, JBA LTs+catless mids, Drilled/Slotted rotors, Kooks Afterburners, catch can & Tune Next: ??? Wish list: Intake & TB, modest cam, UDP, gears
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post #5 of 6 (permalink) Old 08-27-2012, 04:07 PM Thread Starter
 
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Long tubes, yes. The mids are the set of pipes after the header collectors, have the catalytic convertors attached and connects to the resonator (the single muffler looking thing under the middle of the car).
Got it! Thanks!
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post #6 of 6 (permalink) Old 08-27-2012, 10:01 PM
 
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Yeah you won't get any gains from just a muffler swap. The only time those would become restrictive is when you start gettin ALOT of mods on your goat. I'd save up n get some kooks LT headers. Or even JBA shorties if thats your thing. Itll sound way better n actually give you decent gains. But that's just my $.02
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