do you need to reprogram aftermarkwt ecu

Question

do you need to reprogram aftermarket ecu computers at a Hyundai dealership to obtain factory performance?

Answer 1

Think of these update as parts, if you have a aftermarket ECU you would need to update it, the software would only come from the dealer just like if you went to a part counter at the dealer. You would need to the latest update for this vehicle or you will set false 02 sensor codes