P0088 code with 9t13g test crom

[bagger09]

calids unit 1 8u7a-14c2041fd unit 2 8c3a-14c337-ca

I got this code P0088 high pressure fuel rail after installing 80 hp tune. Truck wont go over 65.

Installed stock tune back in truck.

[bagger09]

Also note pcm controls voltage output of alternator with predator installed voltage 12.7 to 13.3 when I went back stock 13.9 to 14.5 volts

[mikel]

did you have any issues with the previous crom?

[bagger09]

Yes on the 9t13c crom transmission would not downshift out of overdrive until you were around 30 mph or you kicked throttle to floor and forced downshift. I have been running the 50 hp tune with out problems and I heard that people were getting better mileage on 80 hp tune. So I installed drove to work and back maybe 25 miles round trip and got the P0088 code and truck ran terrible.