Discuss General Motors (GMC, Chevy, Pontiac, Hummer, Cadillac, etc) tuning topics here. Request definitions, discuss parameters, etc.
2 posts • Page 1 of 1
I bought Mefiburn scan and tune software. I got it all working and communicating. I found Chevy performance locked the tune in the mefi 4b controller i have. It looks like i will need mefi-4b10.xdf where can i get this file. I tried going to the obddiagnostics website and cant find this file. also it looks like i will need LT1perfect65105-4b. I installed this computer on a Chevy 350 with a ramjet 350 manifold. The Cam the engine is basically a 327 corvette. The heads are vortec heads with 175cc intake runners. I got everything running but i want to get the computer dialed in and running 100%.