I'm not sure if this is psychological or real.... I have been noticing a distinct difference in engine behavior with the VDC program turned off compared to having it on. All of this after I got my ECU UpRev tune.
With the VDC turned on: No noticable engine knock, better torque "feel" at low (under 2k rpms) revs, no initial start-up knock.
With VDC turned off: a noticable engine knock at low rpms (under 1K), slight hestiation between 2000 to 2800 rpms, and a slight knock at initial cold start-up.
Someone tell me I'm crazy... or is this real?
(Serious responses only, please
)