Hi everyone, I am new to this. Still looking for the right Cat-back. I have a question: I saw from OutMotoring website that to install the Magnaflow for the MCS, one has to disconnect the battery for 30 min and the battery should remain disconnected during the install. This is to "reset" the ECU. I wonder if this applies to all the Cat-Back installs, irrespective of brand. Appreciate your comments. From Hawaii...George

 

The ECU will adjust itself completely to the lower backpressure and different exhaust flow within 50 miles, especially in the city.