Originally Posted by white08135i
yes i opened the ecu box, nothing extra connected. could it be the wastegate?
Could be anything, but if is your car's hardware it should throw codes.
You can check the vacuum lines for anything obvious.
SOLD --'07 E90 335i, PTF COBB E50, HFS4, ER CP, ETS 7", AA DP, Vishnu Exhaust, DCI, ACT, Nitto Nt555
'10 E92 335i M, 6MT COBB v3, ER IC, ER CP, VRSF DP, Fuel-it st2
installing soon: Mfactory LSD, , powerflex subrframe bushings