Replaced all 4 exhaust valve seals with Fel pro "improved" valve seals yesterday (Sunday). WOW!! NO more smoke or oil burn! It was BAD too, used 1/2 qt in 250-300 mmiles!! And smoking out people working on the gas line on our road BAD (they turned away, pissed! hehe Now drove 600+ miles to beach and back for business meeting, and voila, WAY better power/tq, mileage about 3 mpg better, and I was hauling ass 80-95 mph (traffic speed, so wtf! Anyway, now best mod/maint done for bang for $!! Bought spring compressor to fit and also have 4 "{mproved seals for sale ($10.00 shipped and will loan tools to anyone needing them). PM or call me. PM Camoit about donating them to board...maybe we can get a "tool box" for us to use tools when we need them...put a deposit returned when tools come back! The BMW M3 site does that, and its GREAT!! $ saver!