Pretty much what the title says. About 3 years ago I had the car tuned at a shop with LS1 edit for cam, intake and supporting mods. Since then I have added heads, gears, more stuff etc... I want to get my feet wet tuning and want to know if I can use HP tuners/EFI Live or is my PCM locked with LS1 Edit. The car is a 98 btw any and all help is appreciated.

 

You will have to call the shop and make sure they didn't lock it. There isn't really a way to tell until you hook it up and check. Hopefully they didn't or didn't put a custom OS on the PCM. Normally they don't but some shops do.