Here at CatEcm we test Ecm like no one in the world. We have a universal state of the art engine simulator to test all aspects of the engine electronic side. When shipping a Truck Ecm for repair you are Guaranteed a simulation with heat and vibration. We run the Diesel Ecm up to 100 miles per hour to ensure Max speed simulation. Our RMPs can also go above factory settings to ensure we are doing above industry standards. Pay for this listing and ship us your part for the proper CatEcm way to test Ecms.