hi sorry if this if in the wrong place but im new to this. i was driving my 99 s3 today doing 4500 rpm in 6th then i booted it the revs jumped up 500 rpm then dropped to 4500 rpm anyone have any ideas why the car had a New clutch, concentric slave cylinder and solid flywheel conversion 2 years ago and i barely done any miles in the year i've had it plus i've put it on the computer and its come up with the fault code 01155 awd clutch.thanks.