Have not seen a dyno, but I can tell you these engine put out top class power! I have not used ANY engine that had as much snap as the B5, I always had to mess with the clutch to try and get extra punch.NOt with the B5 I just put regular 1.0 springs in and either carbon or alum shoes and BAM!!! I used to run SIRIO CL7BSTI and this has more punch and same top. I also had vspecs and trinity extechs. top was great on all of them but low mid the B5 killed 'em!!