Kassel Performance

Kassel Performance specializes in BMW engine control unit modifications, tuned for enthusiasts working on BMW engines. The shop is known for engine swaps, including more than 50 E30 swaps running its custom E46 M3 MSS54 engine computer, and for S62 V8 swaps from the E39 M5 into E30 and E36 chassis. Services include EWS delete, virginized ECU work and general coding to customer requests.

Products are sold on the website for common BMW models, from E30 through E90 and Z3, with tuning files for M52, M54, S52, S54 and other engines. The shop is at 730 N. Franklin St. in York, Pennsylvania, and customers can book times by phone, with Friday and Saturday visits by appointment.