Bench tested, good used ECU. Free Recal to match your vehicle. This is a MAX type ECU that can hold any calibration. Send me your CIN # and we will calibrate unit to work with your vehicle. This ECU will arrive to you ready to plug into vehicle and drive. 6 month warranty. Possible alternate part numbers include: 29516999, 29517016, 29517040, 29517064, 29517088.