Cant post much since its a protune, one of the biggest names in game. But I'm stumped and dealing with a protuner has been a struggle. Short back story, i put a base map on it spent a good bit of time dialing in idle, warm up, cruise, stuff like that. Ran great so brought it in after break in for the big tune. Ran solid on dyno, made 604whp, revved out to 8500 rpm on e55.
Current situation. topped of a few days later with flex fuel, e66 in there now and its now revving to redline anymore. Its got a cut like you turned the key off. It doesnt seem to be a certain rpm or even boost, just seems to be at peak torque. Usually around 30.5 to 32psi and between 5,000 and 6300 rpm. Let off throttle and it drives normal again.
Naturally i suspected a boost cut but its under the cut point. got a revised rom from tuner, still did it. Tried my old rom, still did it. So im leaning towards a hardware issue but dont know. Maybe the ignition drivers in ecu, is that a thing? Its not a hard cut either like a fuel or igniton cut, its a very soft, since it doesnt come back on til you lift.
spec that matter:
New purple exotruck. ej20, 02 usdm wrx ecu, carberry 4.2, no dtc's, cobb 4 bar map, cobb 3 port, grey coils, bkr7eix plugs, new oem knock, brand new iwire harnesses top to bottom, flex sensor on rear o2.
practically same exact setup thats in my trouble free OG truck
log, but doest show too much
https://datazap.me/u/terryjr/purple-cut ... ata=2-6-11
