- Sep 15, 2017
- 2010 BMW 135i Single Turbo
Is your PI controller’s boost reference pre or post throttle body? This sounds like it could be an issue of the controller seeing more boost than the manifold is, due to throttle closureThere is only one problem with pi and thats when running your car with traction control on, the ecu is trying to pull fuel out the the pi is still spraying.
With full traction off its not a problem when tuned right.
Try driving a car in the rain running pi and traction control on, its not pleasant.