I put a Remus powerizer on my 09 XB12Ss and lost 15BHP and 10 pounds foot of torque, sent Matt a dyno reading demostrating the power loss, unfortunateky the dyno was playing up and did give any AFV readings....getting those soon, doing another back to back run, have since done the open airbox mod, I'm running a drummer with a set of equal length headers on an )( with the stock ECU (hence the powerizer) not impressed with this product, once the AFV readings are done I'll be sending it back.....[confused][down]