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  1. #1 New to GP could use some help. 
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    So I recently bought a 2006 Grand Prix GT supercharged great condition with 50k on it. It needs an exhaust and would like some recommendations, also how do I figure out exactly what engine it is? ( L67, L32) like I said I am new to the GP world. Any info or performance upgrade suggestions would be greatly appreciated.
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  2. #2 Re: New to GP could use some help. 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Is the exhaust rusted out?

    If not, I wouldnt change anything with it, we have a terrible exhaust note with the 3.8 motor, most will drone and sounds like poop.

    Only a select few mufflers can sound okay, like borla.

    And you have a L32 motor.

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  3. #3 Re: New to GP could use some help. 
    Moderator dsmuts's Avatar
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    It's an L32
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  4. #4 Re: New to GP could use some help. 
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    What defines the l32? Yea I was rear ended and it blew out a muffler n the cat I put a new bumper on and now just the exhaust.
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  5. #5 Re: New to GP could use some help. 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    L67 = L32

    L32 is just a newer design with changes. The timing chain cover is slightly different and the Pistons rods are different.

    But really its all the same, same block, same heads etc etc.

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  6. #6 Re: New to GP could use some help. 
    Moderator dsmuts's Avatar
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    If it's an 04+ supercharged motor it's an L32. It has a gen V m90 and a dbw tb.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  7. #7 Re: New to GP could use some help. 
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    Any mods you guys would recommend?
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  8. #8 Re: New to GP could use some help. 
    GT Level Member Seachicken's Avatar
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    sway bar

    (i know its not engine related but these cars can lean)
    06 Gxp, Bermuda Blue
    82 K5, Black on 35's
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  9. #9 Re: New to GP could use some help. 
    Moderator dsmuts's Avatar
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    Headers
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  10. #10 Re: New to GP could use some help. 
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    What brand would u go with for the exhaust all the YouTube vids sound like garbage
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  11. #11 Re: New to GP could use some help. 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Read up on mods on this website, all the info you'll ever want is here.

    SMGPFC Member #1
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  12. #12 Re: New to GP could use some help. 
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    Would mine be a series III?
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  13. #13 Re: New to GP could use some help. 
    GT Level Member Seachicken's Avatar
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    yes
    06 Gxp, Bermuda Blue
    82 K5, Black on 35's
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