Hi, please read the thread before you shout at me for not searching, I did have a good look.
I, shall give you all the rellevant car info first, I'm a UK spec full BPU with both cats out and Greddy boost controller.
I had the car checked for emissions a month before the MOT just in case it passed, it didn't, I have a 1st cat to go in for the MOT.
My questions are :- Because of the two O2 sensors on a Uk would it be best to have the cat fitted a few days before to give the ecu a good run around to re-adjust all its mixtures and settings or just get them to fit it, check it, change it back again all in the one go? My second question is if I get the cat fitted and I drive around for a few days will I have to do anything with the settings on my boost controller?
Thanks.
Bob.