tuning

  1. D

    Ls computer for 98 5.7 vortec

    Hey guys I know it’s probably been discussed but I’m looking for help finding and installing an LS 0411 computer on my 98 C3500 5.7 4L80e and I want to know what years/models to keep an eye out for and even some info on tuners in northern MI. I’m learning and really want to know more.
  2. R

    More horsepower/ pick up

    Hello everyone, this is my first post. So please take it easy on me... Anyways, I'm tying to find someway to add horsepower to my truck. The engine unfortunately seized up and now I'll have to buy a new one. So, I looked into doing an LS swap; but according to several shops (one being a Chevy...
  3. H

    ECU tuning platform general question

    Hi, part-time lurker, first time poster here. I've already learned a lot from these forums, thanks to everyone. I have a very general and maybe silly question about ECU tuning platforms: How do companies like EFI Live and HP Tuners get the information for the vehicles they support? Or, what's...
  4. S

    obd1 issues

    hello all i am brand new to the gmt400 scene. i bought the truck and decided to do an engine swap. the new motor is a 355 sbc with a holley sniper efi system that is stand alone. i went with a th350 so i dont need to have the ecu trying to shift the truck and freaking out. i want to use the...
  5. B

    5.7 TBI tuning

    I have a 89 c1500 with the 5.7 tbi and I want to get into tuning. This is my spare run around vehicle and I think it’s a decent platform to start considering it is all stock and I have replaced most all maintenance parts and it runs well. I’m debating between getting a chip burner or saving for...
  6. jbfrench

    Comp Cams L31 Tuning

    Hi everybody, I'm new to all of this. I bought my first GMT400 last year and have been working on it off and on over the course of the year. I put a Comp Cams XR258HR cam in along with new pushrods, lifters, and springs. The stock tune isn't liking the new cam. Can anyone recommend any tuning...
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