I figured I'd start my own thread and not clutter up the one with Akelly and Wowzer doing Cal discovery..
So I got my willem burner and 2 27SF512 chips... I took the bin I read off the original and tried flashing it to the 27SF512. I put it int he ECU and the fuel pump primes but when I try to crank the engine, it just cranks and never starts.
I connected my DRB-II to the truck, and I can communicate with the SBEC-II, it comes back with the model number and reads sensors, but indicates an internal PCM fault.
If i pop in the original 27c256 chip and, it fires right up and there are no issues... I did burn the 27SF512 at the 8000 offset..
Any ideas what I'm doing wrong or what may be wrong?