GM Truck Club
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 6 of 6
  1. #1

    Default best programmers

    what would be the best programmer for a 2005 silverado 2500hd with a 6.0L underneath the hood. i have a hypertech but it is very basic and there had to be something better out there.

    2005 silverado 2500hd loaded
    leveling kit
    brush guard
    throttle body spacer
    cold air intake
    true dual flowasters

  2. #2

    Cool best programmers

    The Diablo Preditor lets you fine tune your truck more than the Hypertech or Superchips. There website only shows some of the tuning you can do with it. It has more transmission adjustments, change the engine timing, injector slope etc. I used them all and I like the Diablo the best. You have to play with it . I found on my truck that the long term fuel trims were way to rich so I adjusted them plus I run the 87 octane tune, but added 3 degrees of timing in the 2,000 to 4,000 rpm range with know detonation. You can run your truck with the Diablo in live data mod and see spark knock if you have to much timing. Like I said you can really play with it, of course every trucks differant

  3. #3


    that sounds like something worth investing in. did you notice your gas milage increase with all the adjustments that you did with it. did you adjust any of the transmission shift points and can you make it shift firmer and can you reprogram the tire size for bigger tires. that diablo sounds really good though. do you have a recomended site to buy it from or would you get it from a store.

  4. #4

    Cool best programmers

    Jegs seems to have the best price. I picked up about 1 MPG. I was mostly looking for more performance and drivabilty. I changed my shift quikness, firmness and delayed the 1-2 shift points along with the other mods I posted. Also you can adjust for tire and gear changes. I have 35s and 4.10 gears in my truck. You can also change the part and full throttle shift firmness. It wont turn your truck into a Toyotas MPGs or a 10 second Camaro, but your can make it more fun to drive.

  5. #5
    Legend cascott325's Avatar
    Join Date
    Aug 2008
    Lawrenceburg, Kentucky


    i agree. i just had my diablo installed, and i love it!
    2000 silverado with a 5.3l v8, shorty headers, upgraded plugs, 10 mil wires, magnaflow high flow cats, flowmaster 80 series muffler(2 in 2 out) w/ 18 inch stainless silverline tips. i have a k&n CIA. its a 4x4 z71 offroad package. Ls model.
    extended cab 160k miles, truxedo low profile bed cover, diablo sport predator tuner.
    reman tranny @ 130k miles

  6. #6


    thats awesome. im goin to get that. was the installation easy or is it complicated and should i get professionally done?

Similar Threads

  1. programmers
    By 2wheelmudder in forum General Chevy & GM Tech Questions
    Replies: 7
    Last: 09-02-2009, 12:07 PM
  2. programmers??
    By flatsstalker1 in forum Performance & Fuel
    Replies: 9
    Last: 07-05-2009, 12:59 AM
  3. programmers
    By josh02z71 in forum Performance & Fuel
    Replies: 4
    Last: 05-18-2009, 12:24 AM
  4. New 5.3 programmers...
    By lelik30 in forum Performance & Fuel
    Replies: 13
    Last: 01-06-2009, 10:31 PM
  5. programmers
    By livinloud in forum Performance & Fuel
    Replies: 8
    Last: 06-16-2008, 06:37 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts