No check engine light. When driving its driving like its new. Ive done a few italian tune ups and it helped slightly...aswell maybe its my fault I "baby" the car? By this I mean..2000rpm shifts while driving.

Im hoping its carbon build-up! I will try the throttle body thing if nothing else. What about fuel filter?

__________________
99 C43
98 S420
99 C230K
01 C240