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Egr & Air Tune Out????

This is a discussion on Egr & Air Tune Out???? within the Computer & Tuning forums, part of the LSx Technical Help Section category; Originally Posted by supercharged666 Just swapped the LS1 intake back on and everything is great now. Shift points are back ...

  1. #21
    cutting and welding mark21742's Avatar
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    Quote Originally Posted by supercharged666 View Post
    Just swapped the LS1 intake back on and everything is great now. Shift points are back to normal. Anyone herd of the FAST 90mm TB having problems?? I thought i ran acroos a thread along time ago saying how much they sucked, more problems then there worth?
    only thing I've heard of is them sticking.
    try swaping out TPSs? yes they both worked, but I wonder if the TPS on the FAST has a flat spot or high resistence short

  2. #22
    Junior Member supercharged666's Avatar
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    I used the stock TPS from my LS1 TB. Bolted to the 90mm unit. It plugged into the 90mm with no problems. Yea I thought it could have been the TPS to but its running fine back in the LS1 TB now???? This sucks, spent all that dam money on the FAST setup and can't really use it.

  3. #23
    cutting and welding mark21742's Avatar
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    maybe check the trottle shaft in the 90 to see if there is more play for the TPS? I'm just guessing now.
    Frost will correct me if wrong, but even part throttle shift is dictated by just TPS & RPM even at part throttle (if I'm correct)

    unless you are running hot with the 90 and throwing it into hot shift mode......but that shouldn't change tranny fluid temps, and I don't know if the 98 had hot mode option
    Last edited by mark21742; 10-26-2009 at 11:52 AM.

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