Hi, I have F30 330i xdrive.

A few days ago, I flashed the original software back from Stage 1. Everything seemed OK until I drove in Comfort mode. The car upshifts under 1000 RPM, and when I press the gas, it doesn’t downshift (it never did this before). Also, the Sport Display (where HP and Nm are shown) is showing some nonsense numbers. The torque should be the original 350 Nm, but the display is going over 450, same with the power. The transmission is completely fine; cruise control also shifts fine.

The car had tuned 305HP and 480NM and now should has 252HP and 350NM

Thanks for every advice

Edited 18 hours ago18 hr by jakubv

Morning Jakub

Welcome to the Forum

I would guess that there is either a problem with a flawed file in the re-flash, is it the original or a file you obtained? I suppose you have tried clearing it down and re-flashing again, run a diagnostic scan before re-flashing to make sure there are no issues that can interfere

Good Luck

Dave

I’ve already cleared all and there are no errors. My guess at this point is that the issue could be related to the transmission control unit reading incorrect torque data from the engine control unit. That would also explain why cruise control shifts normally, as it seems to use different map. Is that possible?

Appreciate your time.