[Jimabe]

Just completed second set of mods giving me a little over 700 whp. List of mods in signature.

No changes or tuning done to the transmission. Had car back from tuner and drove 4-5 times. Did plenty of manual shift WOT sessions and in “D” WOT hits w/no issues.

Was giving buddy a ride and had in manual mode near redline and car had an “event” that lost drive and over revved engine. Did multiple times. Majorly scary. Thought blew something up at first. Car idled, ran and shifted fine immediately after while driving easy. No leaking fluids, mechanical noises or service lights.

Let it sit to cool down at work and on trip home figured I’d give brief WOT run in D and see what happens. Was in D, going about 25, then went WOT. Didn’t make it to next shift point and had same event.

Took to tuner and it repeated for him. Says car is actually downshifting instead of upshifting while near red line. Said rpms flashed to 7500 then rev limiter takes over and tries to shut down. Certainly VERY concerning. He is going to try and trouble shoot.

Has anyone had any experience like this? Almost seems like a transmission programming thing gone wrong.