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Diablo Sport Tuner

Discussion in 'GM Powertrain' started by NVR_LFT, May 25, 2009.

  1. NVR_LFT

    NVR_LFT New Member

    I have an 08 tahoe with the 5.3. I am running a spectre cold air intake and a corsa exhaust. I also got a diablo tuner and have tweaked with it a bit. I added 3 degrees of timing and pulled 3% on the fuel. Things tacks out hard on the big end between 4000-5500 RPM, seems to be lacking in the mid range. Any suggestions on what kind of tune to run?
  2. silveradotrailblazer

    silveradotrailblazer Epic Member 5+ Years ROTM Winner 5000 Posts

    Diablosport tuner

    What fuel octane did you tune for? How did you determan to take out 3% fuel? I believe with your year tuner you can adjust timing in three differnat rpm ranges. Did you tune any rpm range other than 4,000 to 7,000? When you said you took 3% fuel out, are you refering to Long Term Fuel Trims?

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