Question about gmtuners/Sinister Performance

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  • 1988GTU
    LB62LHObbqftmfw
    • Nov 2005
    • 2475
    #1

    Question about gmtuners/Sinister Performance

    Has anyone gone through them for OBD1 fwd tuning? Are they honest, fair, and put customers first? Anyone hear/read/had ANY problems with there products, people, and/or services?
    How are there mail order tunes for boosted applications?
    Lifting my front wheels, one jack at a time.
    Tags: None
    • dohcfiend
      King Chalupa
      • Jan 2004
      • 2351
      #2
      they are definately fair and honest. as far as i knwo they are the only place available that can tune the 94-95 dohc memcals
      The Official Rotating Mass Nazi

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        • 1988GTU
          LB62LHObbqftmfw
          • Nov 2005
          • 2475
          #3
          What sort of prcing would someone in the end pay for a boosted type tune?
          Lifting my front wheels, one jack at a time.

            Comment

            • dohcfiend
              King Chalupa
              • Jan 2004
              • 2351
              #4
              not sure for tunes but i paid only $40 for basic changes.
              The Official Rotating Mass Nazi

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                • 1988GTU
                  LB62LHObbqftmfw
                  • Nov 2005
                  • 2475
                  #5
                  Ok thanks.
                  Lifting my front wheels, one jack at a time.

                    Comment

                    • Guest
                      #6
                      I have a sinister chip in my car. My car runs good. Its in a turbo 3.4 fiero. Car runs good with it. Didn't cost me much, like $50 or something. I recommend

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