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Turbo Grand Prix

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


2,051 topics in this forum

  1. "NEW" TGP longblock for sale on PFF

    • 1 reply
    • 1.1k views
  2. this garrett t-25 any good? (brand new)

    • 5 replies
    • 1.1k views
  3. Crossover Flex joint diameter.

    • 1 reply
    • 1.1k views
  4. Turbo Flange gasket?

    • 3 replies
    • 1.1k views
  5. Positive Evolution of the TGP Message Forum, Great Job!

    • 3 replies
    • 1.1k views
  6. porting the TB

    • 2 replies
    • 1.1k views
  7. Threaded wastegate rod

    • 4 replies
    • 1.1k views
  8. Bad injectors???

    • 3 replies
    • 1.1k views
  9. porting the intake

    • 0 replies
    • 1.1k views
  10. Hey Jeff M!

    • 3 replies
    • 1.1k views
  11. what should i do w/my other T25 turbo?

    • 5 replies
    • 1.1k views
  12. Intercooler Pressure Drop Info

    • 0 replies
    • 1.1k views
  13. Turbo question for jeff

    • 3 replies
    • 1.1k views
  14. Nice TGP for sale on ebay. 90 144K Red/tan loc: GA

    • 2 replies
    • 1.1k views
  15. Fan Motor Meltdown

    • 1 reply
    • 1.1k views
  16. input C21 on the 7727 computer

    • 2 replies
    • 1.1k views
  17. How do you install a boost guage???

    • 3 replies
    • 1.1k views
  18. Breaking in the cam

    • 2 replies
    • 1.1k views
  19. JeffM "turbograndprix.com" site pictures

    • 0 replies
    • 1.1k views
    • 2 replies
    • 1.1k views
  20. Manual shifter cables too close to downpipe

    • 6 replies
    • 1.1k views
  21. Intake Manifold Gasket Set

    • 4 replies
    • 1.1k views
  22. Turbo sizing flow calculations

    • 2 replies
    • 1.1k views
  23. 1989 TGP

    • 2 replies
    • 1.1k views
  24. Was F-ing rear-ended today!

    • 3 replies
    • 1.1k views
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