Quote:
Originally Posted by Imran@Evolve
Are you talking about the cats in the downpipe? If so then most of the catted options I have seen will bring the CEL eventually. Even with a complete decat downpipe the car will pass MOT if the stock secondary cats are in place. We have been doing this on N54 engined cars since 2008.
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Thanks for the response was after a few ideas as to the best route to go in the uk , there's a lot of good ideas and product around but all seem to be from the USA and when you ask for shipping details it ends up being more than the product, I have mainly had normally aspirated performance cars in the past so have no real experience of the effect the cats have on turbos , my thinking was to free up the flow but to keep some back pressure by reducing the cells on both cats .