Originally Posted by cssnms
Did you make sure to lock the car and let the ecu go to sleep before installing? If not it will cause codes.
Since you car went into limp mode and ses light you will need to clear codes with bt cable. Even if light is not on car stores codes in memory until cleared.
Given the amount of time it takes to install, the car should have been asleep already. I only do that, btw, when I'm setting up to clear codes, not swap out the tune (with 3 tunes to play with, it happens more often than you think). :P