2500 rpm rev limiter

[goodwrenchbutch]

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

[blindsquirrel]

You can't use HP Tuners to reprogram a Gen 4 ECM with a different OS like that. Must use GM SPS.

[goodwrenchbutch]

You can't use HP Tuners to reprogram a Gen 4 ECM with a different OS like that. Must use GM SPS.

i am a gm dealer tech, i did use gm sps to program the used ecm to the 2010 zr1 vin, and then used hptuners to transfer the calibration data.

[blindsquirrel]

Well the GMPP calibration isn't going to be compatible with the ZR1, particularly in the electronic throttle tables, the ones that cause REP if messed with.

[blindsquirrel]

Actually... the supercharged OS used on a N/A engine is likely to be a bigger problem. That wasn't a great choice.

What's the ECM service number?

[goodwrenchbutch]

The service number is 12633264, part number 12639298. Is there a calibration that will work with this ecm? Or do I need a different ecm/calibration?