been a while since i came back on hello everyone. got a e39 540 now super clean. car is fast runs good but am getting the usual engine shakes between 15-2000rpm bmw should have told this to customer s when they bought the cars f- sakes. im currently trying to solve this problem for all m62 engines when i do ill fix everyones at discount. Im tearing down a v8 now piece by piece and testing at the same time.