1. Welcome To GMTruckClub.com!

    The #1 Chevy Truck Forum Online
    Online since 2004, we are the #1 Chevy Truck & SUV forum and user community. If you have any questions about your Chevy or GMC Truck, SUV or Crossover, or just want to connect with other GM owners and enthusiasts around the world, you've found the best place on the internet to do that.

    Join Today ~ It's Free
    Registering is Free and Easy! Hope to see you on the forums soon!

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 New Member ROTM Winner 1000 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?

Share This Page