I am replacing the sensor tonight just wanted to see what people thought about relearn procedure. Dealer told me after it is replaced car will need to be relearned by tech 2. I have been reading up on it and it seems as though some people did not have to relearn after replacing sensor where as some people could not get car to start without doing it. So my question is do i or dont i need to relearn sensor and if i do and take it to dealer will this cause problems with my stage 2 tuning when the do relearn.

 

you may or may not have to do a relearn and it wont affect the tune