93 525i automatic, had tires balanced by Hunter9000 machine, aligned, new shocks, tires...the works. The 55-60mph shimmy disappeared after the wheel balance. Now after replacing the rear rotor/pads, motor mounts, fuel filter, air filter, and one injector air boot (it was cracked), the car developes a shimmy at 80 mph!!! (after 75 mph it's noticeable). Car has Conforti chip. Should I disconnect the DME for a bit and plug it back in to reset the DME? Any suggestions? Thank you.