2k to 6500 Log E54 Fixed all boost leaks, checked and reset wastegate to ensure proper closure at appropriate vacuum. Replaced wastegate vacuum line, looked for signs of soot from manifold for possible pre-turbo leak (none found). 5th revision.
CD919 E50 2.3 Car is stuttering really bad soon as I enter boost in second I tried logging in 2nd gear from 3k rpm, let off rather quickly bc it was stuttering