Thread: Hey. new gxp owner here. Need some help with mufflers !!

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  1. #1 Hey. new gxp owner here. Need some help with mufflers !! 
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    Just got a 06 GP GXP...

    Failed Md inspection because the mufflers have holes starting in them

    Question.. where can I get just the mufflers without buying the whole darn exhaust system ??? TIA



    Last edited by GXPnewbie; 07-28-2016 at 04:58 PM.
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  2. #2 Re: Hey. new gxp owner here. Need some help with mufflers !! 
    I can't car too good. SaukRapids's Avatar
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    I think I found the stockers on Summit. No idea the part number, but I remember they were walkers (brand). You won't need a whole cat-back or anything.

    I had the exhaust stuff written down, but I found it searching this site. They're 2 1/4" offset inlet, center out I believe. Call a local shop to make sure.
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  3. #3 Re: Hey. new gxp owner here. Need some help with mufflers !! 
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    Searched Walkers site..no listing for 5.3L ???

    Called 2 local shops and was told same thing, nothing showing for the 5.3 without the whole cat-back
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  4. #4 Re: Hey. new gxp owner here. Need some help with mufflers !! 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Find ones the same length and same inlet/outlet as stock and buy those.

    They will have to be welded in because the cat-back system are all one piece.

    SMGPFC Member #1
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  5. #5 Re: Hey. new gxp owner here. Need some help with mufflers !! 
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    Why not just use some muffler tape for the time being to get thru, go to another location if need be. there are no real direct bot on beside Walker, and even those require work. check this thread.

    http://ls1tech.com/forums/ls4-perfor...ust-today.html
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  6. #6 Re: Hey. new gxp owner here. Need some help with mufflers !! 
    The Blue One blueguy's Avatar
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    Just buy some cheap 3800 mufflers.

    They're basically the same damn thing.

    Use them.
    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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  7. #7 Re: Hey. new gxp owner here. Need some help with mufflers !! 
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    I have a 06 GXP same problem, no mufflers listed. Look up same year 3.8 mufflers work, hangers are same inlet same just cut behind old muffler, have to get your tips welded on.
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