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Thread: How far back can we go on Gm Trucks? 1998?

  1. #1
    Tuner
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    Sep 2010
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    Alpena, MI
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    How far back can we go on Gm Trucks? 1998?

    Just wondering if the latest beta lets us tune the '97's or does the pcm style not allow us to?
    Thanks for the info!
    1998 Regal GS Turbo Hp Tuned
    1998 Regal GS Gen V Hp Tuned
    2005 Dodge Dakota Hemi Swap<--waiting for tunability

  2. #2
    Advanced Tuner
    Join Date
    Apr 2009
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    584
    Last I checked the 97 is unsupported. You could swap the pcm with some wiring changes to either a 98 or to the 411 pcm.
    1997 Trans Am WS6 - LS1 swap - TR224 - Pacesetter Longtubes - Yank SS3600
    - 3.42 Moser 12 bolt - Wilwood Brakes - HP Tuners tuned - P1SC-1 Procharger

  3. #3
    Advanced Tuner Montecarlodrag's Avatar
    Join Date
    Nov 2009
    Location
    Chihuahua, Mexico
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    441
    98 is the oldest one (blackbox).
    97 is not supported, I tried one a few weeks ago and no luck. I had to buy Tunercats OBDII (which is the only option available for those trucks).
    11 sec Montecarlo SS

  4. #4
    Advanced Tuner
    Join Date
    Mar 2011
    Posts
    348
    just swap in a 98 or newer ecm my 96 has a 98 ecm and my 98 has a 2001 ecm
    My setup is a 356ci with a 260/268 (212/218 at .050 lift) duration cam with aluminium corvette heads and flat top pistons running 11.3 comp. ratio. with tuned port injection and vortec crank pick up and dizzy running a 411 pcm and 60lb bosch injectors, 1.6 ratio roller rockers. For transmission its a 4l65e built with the monster in a box mega ss kit. All in a 92 chevy ext cab 4x4 pickup with a 98 cab now installed with a third door! running only e85