This is a direct fit off road downpipe for the r56/r55/JCW turbo S Mini. This is a direct replacement of the stock downpipe. It fits the stock catback as well as other brands that fit the stock location such as invidia, magnaflow etc. We included a highflow resonator in the downpipe to limit rasp which you might get from different aftermarket catbacks. Expect quicker turbo spool ups as well and less lag. A conservative number is 10HP and it will vary from car to car based on modifications. We have an fouler in the system which will prevent the CEL light from coming on sooner than it would with out it. |