flashpaq question

Discussion in 'General Chevy & GM Tech Questions' started by 2000liftdsuburban, Feb 25, 2010.

  1. ok so i just recently bought a tuner for the 00 suburban of mine... i did the 87 tune and changed the tire size,gear ratio, and the shift points(not that much though)

    so now i love the tune but when im driving on the highway ive noticed that my truck spedo says im doing like 90mph but i know im not..... any suggestions hints...

    OR any tips on how to tune the trucks?(ex: shift points,shift pressure's,)

    lemme know your tunes if you have them for superships flashpaq lol

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