Thread: GTP exhaust 1 muffler vs 2 muffler?

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  1. #1 GTP exhaust 1 muffler vs 2 muffler? 
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    Hello

    I have a 1998 GTP with a custom Borla exhaust including two 2.5in mufflers. I am thinking about eliminating the y section in the rear and just running one muffler, basically like a regal setup. How would this affect the sound and performance? My hopes are it might make it deeper, smoother, and quieter. I would still leave the other muffler up there for looks.

    thanks for any input
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  2. #2 Re: GTP exhaust 1 muffler vs 2 muffler? 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Performance gain = none what so ever.

    Sound, it might be quieter but thats hard to say.

    I would just install a better resonator to slightly change the sound, as big long glasspack is a good resonator.

    SMGPFC Member #1
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  3. #3 Re: GTP exhaust 1 muffler vs 2 muffler? 
    The Blue One blueguy's Avatar
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    Get catted headers, get a big resonator like doofy said...and keep the mufflers.

    It'll make the difference you want.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  4. #4 Re: GTP exhaust 1 muffler vs 2 muffler? 
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    I already have a long 2.5in magnaflow resonator. Im thinking about doing this because the pipe to the drivers side muffler is hitting the swaybar and need attention anyway.
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