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Thread: Stock cat back exhaust replacement

  1. #1
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    Default Stock cat back exhaust replacement

    I have an exhaust leak somewhere and am looking for a stock replacement exhaust. What vendors sell stock replacement cat back exhaust? TIA
    2009 G8 GT
    1985 Buick Grand National w/87 drivetrain

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    So the center muffler is what’s causing the exhaust leak. Without having to replace the entire cat back system can I cut that out and put in a couple of lap jointed straight pipes? What’s the diameter on the stock exhaust pipe? Does any vendor sell just those pipes I’m looking for?
    2009 G8 GT
    1985 Buick Grand National w/87 drivetrain

  3. #3
    VIP Member Kermit's Avatar
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    Where are you located? I have a FULL exhaust just sitting in my garage when I replaced it with Kooks.
    Last edited by Kermit; 10-09-2020 at 01:14 PM. Reason: wrong info
    2009 G8 GT MGM.
    Performance - 1900 MagnaCharger , Lunati Cam, RCR Ported Heads, Intake and TB, FAST #65 Injectors, CTS-v fuel pump, Kooks 1 3/4" LT and Catted X-Pipe, Pypes Violator Axel-Back, Roto Fab CAI, RX Oil Catch Can, Pedders XA's & Track II Bushings, BMR Sub Frame Connectors, Sway Bars & Rear Control Arms, 19 Inch Staggered (8.5 front/9.5 Rear) VMR 810 Wheels, DBA 4000 Sloted Rotors with Hawk HPS Pads & Russels Brake Lines, Camaro 3.27 Diff, Gforce Axles.
    Cosmetic - Partially De-badged Rear, 6.0L Badges, Tinted Side, Rear Markers & Tail Lights, 35% Tint, Auto-dim Mirror, Spencers 6K 35W & 5K 25W Fog HIDS, Blacked Out Door Chrome, Vagas Nates 3 Gauge Pod W/Interceptor Gauges, Color Matched GXP Diffuser, Shark Fin Antenna, V-LEDs on Side/Rear Markers, Brakes & Back Ups Lights, MM Carbon Fiber Rear Spoiler


    1/4 mile 10.917 at 130.44mph 564 RWHP 568 Torque.

  4. #4
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    Quote Originally Posted by Kermit View Post
    Where are you located? I have a FULL exhaust just sitting in my garage when I replaced it with Kooks.
    Suburbs of Chicago
    2009 G8 GT
    1985 Buick Grand National w/87 drivetrain

  5. #5
    VIP Member Kermit's Avatar
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    Quote Originally Posted by turbojitsu View Post
    Suburbs of Chicago
    To bad you are not closer.
    2009 G8 GT MGM.
    Performance - 1900 MagnaCharger , Lunati Cam, RCR Ported Heads, Intake and TB, FAST #65 Injectors, CTS-v fuel pump, Kooks 1 3/4" LT and Catted X-Pipe, Pypes Violator Axel-Back, Roto Fab CAI, RX Oil Catch Can, Pedders XA's & Track II Bushings, BMR Sub Frame Connectors, Sway Bars & Rear Control Arms, 19 Inch Staggered (8.5 front/9.5 Rear) VMR 810 Wheels, DBA 4000 Sloted Rotors with Hawk HPS Pads & Russels Brake Lines, Camaro 3.27 Diff, Gforce Axles.
    Cosmetic - Partially De-badged Rear, 6.0L Badges, Tinted Side, Rear Markers & Tail Lights, 35% Tint, Auto-dim Mirror, Spencers 6K 35W & 5K 25W Fog HIDS, Blacked Out Door Chrome, Vagas Nates 3 Gauge Pod W/Interceptor Gauges, Color Matched GXP Diffuser, Shark Fin Antenna, V-LEDs on Side/Rear Markers, Brakes & Back Ups Lights, MM Carbon Fiber Rear Spoiler


    1/4 mile 10.917 at 130.44mph 564 RWHP 568 Torque.

  6. #6
    Too many projects.
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    I have a brand new GT mid pipe [500 miles or less] sitting in the garage. Detroit area
    2017 Chevy SS / OrangeBlast / A6/ Spare/ Roof - hers
    2016 Chevy SS / Jungle / M6 / Spare / Roof
    2013 Chevy Avalanche / Z71 / FGM / Roof
    2009 Pontiac G8 GXP / SBM / M6 / No Roof
    1988 Volvo 740 Turbo Wagon (modified)
    2009 Saab 9-3 Combi / 2.0T

  7. #7
    Beyond Help tchr49's Avatar
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    I have full exhaust, manifolds to mufflers...
    things are not what they appear to be.....

    2009.5 Liquid Red,Onyx Red, Premium Package, e85 Surprise Package

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