TTMerc

Just wondering if any one has seen a boost drop while the "catalyst efficiency" light is on. Car seems to not be as quick and only makes 10lbs no matter which scanner I use. Only codes are for the cats. Shouldn't I be about 18lbs or so on a m157? Also mine is the S version. Any insight would be great! Thanks!

garrettg

May want to try the E63 specific area of this forum. Us m278 owners get 10lbs of boost on a good day.