For Sale 70 Pin ECM from C15 Acert, BXS serial number. Has PDI stage 1 tune based on 550 CAT file. Capable of 665 RWHP on healthy motor. Increased horsepower, fuel mileage gain, better throttle response, better idle quality, not to mention more fun to drive. $2800.00. Still on running truck right now. Serious Inquiries call 806-790-9262.