I am working on a 64 vette with an ls3/5speed using the gmpp ls3/480 controller trying to get the pwm fans to operate. After many hours of reading i installed a used e67 ecm and programmed it to a 2010 zr1 manual transmission from the tune repository, copied the files from the gmpp controler. The engine runs, the fans operate with coolant temp and a/c as desired but it has a rev limiter at 2500rpm that i cannot seem to find. I believe this car has the ctsv app pedal and originally had a silver blade throttle body. i have swapped to a gold blade throttle body but it didnt help. Is this a pedal issue or something in the calibration?
Thanks, Nathan