[socalengineer]

Hi,

I have a pure stage 2 on my 640i n55 PWG running e30 gas. I have been working with my tuner for a while, but I have not been able to get rid of the drivetrain malfunction it always happens. I keep getting overboosts in between shifts and even just pushing the throttle in 7th gear at 3500rpm.

Is there a recommended tuner or program for this turbo that has gotten it tuned well? I am using MHD. Is bootmod3 better for this PWG? Any help would be appreciated would love to have the car running 100% thank you.