I have a 09 G8 GT that has an issue short shifting the 3-4 shift. At roughly 93mph the car will shift from 3rd directly into 5th gear. If you use the TUTD to put it in 4th gear it will also try to shift into 5th at around 100mph. It doesn't do it all the time but when it does it is almost always at 93-94 mph.
The car has a LSA blower, heads, cam, stock bottom end, flex fuel with a stock 6L80 and a LSA converter.
I included the tune file, scan, screenshot and config. Any ideas or any help would be very much appreciated!
Newest OS, LSA blower, PD cam, ZL1 converter, ID1000's, E85, full flex.hpt
trans shift into 5th.hpl
LSA,LS9 Config flex fuel.cfg
Brandon shift into 5th.PNG