Rising rate fpr are usually used on n/a cars that have switched over to forced induction. For our cars you should be using a 1 to 1 fpr due to the fact the stock ecu has all the info it requires for the a/f ratio.bersh240 wrote:uhh correct me if im wrong but the megan racing fpr isnt rasing rate. i just went thru that whole thing with that. and rising rate is important for turbo cars