this would also happen to me, but I had just replaced my clutch and had a machine shop machine the flywheel (bad idea) - the shuttering was the bolts on the flywheel hitting the clutch disk - also because they machined it wrong the cluch wore out after about 5 months. How old is the clutch that you have, may be time to get a new one. - If you do have to get a new, Go aftermarket much cheaper (aka. stock flywheel was $780 or something) got whole aftermaket M3 setup for just under 1K$ including LW Flywheel make a big difference. __________________ Custom Cold Air Intake, Custom IAT controller, SuperSprint Exhaust, High Flow CAT, Long Tube Header, H&R 'Race' Lowering springs, Short Shifter, JB Racing Lightweight Flywheel, M3 Clutch Kit w/Rogue Semi-Metalic Disk, Zex Nitrous System, Euro Clear Corners, Elipsoid Headlights w/Halos, Eyebrows, Window Tinting, Invisible Bra |