Originally Posted by Andrew@ActiveAutowerke
Its just some minor fueling changes that we found could be improved based on the 328 test unit with our exhaust, k&n filter and charcoal filter removed. We averaged 2-4 whp gains in the mid range.
Andrew, you guys did all the above mods to my 2012 328i back in November 12'. My question is the car is running and performing superb, is it worth coming and upgrading to revision 3? If so when can I bring it in and what could I expect in additional performance?