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Turbo Grand Prix

This forum is for enthusiasts of the rare 1989-90 Pontiac Grand Prix Turbo.

2,050 topics in this forum

  1. Wiring garbage on TGP

    By Gibby,   
    • 6 replies
    • 2.9k views
    • NTRCOOL
    • NTRCOOL

  2. Front Mount Intercooler

    By Murt TTA/TGP,   
    • 17 replies
    • 2.9k views
    • 1trucavalier
    • 1trucavalier

  3. AC Compressor noise? How about alternator output? Updated with results

    By R Dubya,   
    • 14 replies
    • 2.9k views
    • Black 90 TGP
    • Black 90 TGP

  4. Forget a few important things I need..please help! Thanks.

    By SSEiyah93,   
    • 10 replies
    • 2.9k views
    • Garrett Powered
    • Garrett Powered

  5. Option Codes Help Needed

    By Jeff M,   
    • 21 replies
    • 2.9k views
    • Bossman429
    • Bossman429

  6. Injector Testing

    By 1blkgtp422,   
    • 13 replies
    • 2.9k views
    • Garrett Powered
    • Garrett Powered

  7. Just picked up 1990 TGP need help : ( 1 2

    By Shifter23,   
    • 31 replies
    • 2.9k views
    • Garrett Powered
    • Garrett Powered

  8. TSTE has been junked.

    By GutlessSupreme,
    • 1 reply
    • 2.9k views
    • jiggity76
    • jiggity76

  9. R-134a adapter for TGP low side AC fitting?

    By GnatGoSplat,   
    • 7 replies
    • 2.9k views
    • thikstik
    • thikstik

  10. Stupid Stupid People!!! 1 2

    By dkorinko,   
    • 26 replies
    • 2.8k views
    • Chris A
    • Chris A

  11. any interest in a pretty much parts robbed 1990 TGP in wisconsin? worth it? 1 2

    By McLaren1,   
    • 32 replies
    • 2.8k views
    • GhrarhG
    • GhrarhG

  12. cold air intake on turbo pointless?

    By Marcus18,   
    • 7 replies
    • 2.8k views
    • no1kicker
    • no1kicker

  13. 89 Mclaren turbo grand prix for sale price lowered !!!!!!!

    By tgp89guy,
    • 6 replies
    • 2.8k views
    • tgp89guy
    • tgp89guy

  14. 90 Turbo Grand Prix, I noticed redline, why does it go past redline?

    By GHOSTOWLGRID,   
    • 7 replies
    • 2.8k views
    • RobertISaar
    • RobertISaar

  15. 90 tgp engine rebuild

    By jffocused,   
    • 18 replies
    • 2.8k views
    • jffocused
    • jffocused

  16. Who has a Chipped TGP? 1 2

    By 89GPSE,   
    • 29 replies
    • 2.8k views
    • TGPilot
    • TGPilot

  17. BOV installed - pics *vids added* 1 2

    By Guest TurboSedan,
    • 30 replies
    • 2.8k views
    • Guest
    • Guest

  18. 1990 TGP I'm interested in buying but worried about problems it could have. 1 2

    By SteveH,   
    • 25 replies
    • 2.8k views
    • krenzy
    • krenzy

  19. ECM question on 1990 turbo

    By RLKBOB,   
    • 20 replies
    • 2.8k views
    • RLKBOB
    • RLKBOB

  20. New TGP Owner

    By S P E E D,
    • 22 replies
    • 2.8k views
    • krenzy
    • krenzy

  21. Welcome to my nightmare. Any suggestions are welcome. 1 2

    By Adam S.,
    • 25 replies
    • 2.8k views
    • OldsmoBeast
    • OldsmoBeast

  22. subframe bolts broke on me

    By no1kicker,   
    • 16 replies
    • 2.8k views
    • no1kicker
    • no1kicker

  23. Premium gas?

    By Addicted2bass,   
    • 16 replies
    • 2.8k views
    • jeremy
    • jeremy

  24. T3 ideas (mention your turbo swap dream)

    By Shifter23,   
    • 14 replies
    • 2.8k views
    • GhrarhG
    • GhrarhG

  25. TGP cam specs?

    By Intlcutlass,   
    • 19 replies
    • 2.8k views
    • SleeperRed90TGp
    • SleeperRed90TGp
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