http://www.s14.net/forums/showthread.php?s=&threadid=18231&highlight Courtesy of Demlotcrew, pics on second page, as it says marking before separation doesnt guarantee it was aligned in the first place! Look for the dimples before removal, if obscured by rust, marking it yourself is the next best op...

I'm sure the Prop shaft is balanced as a single unit, so should be re-assembled as it came off the car. I believe there is a dimple stamped on either half near the centre joint and should be lined up.

I've experienced the same problems with my M3 :cry: , as previously stated it was a knackered ECU. Try and borrow one to check first. I managed to replace both relays, dizzy cap, rotor arm, both flywheel sensors, fuel filter, blue temp sensor and to no avail. Dont throw parts at it like me :mad: :x ...

s14's dont get adjusted, the shim over bucket gets replaced with the correct size one!

http://e30m3performance.com/maintenance ... stment.htm
hope this helps
Dan