Now that I have fully uninstalled MHD and then reflashed stage 1 again - Car now gives misfires inn Cyl 1 not 3 as before.
Misfires show at ANYfull pedal press.
Car missfired on 1+, so we reverted to stage 0, which ran good - Always on DSC off.
I couldn't even keep the predal pressed.
Car DTC - Missfire Cyl 3
Plausability Fuel pump
Car ran OK on this tune - then I tried another higher mapsthat where not ok, and then we reverted back to it and it never ran good after it unless it was stage 0 / stock.