my buddy bought it new but it was too much for his cen so i got it now off trade. ran it today and it was awesome till i had battery problems. went back out to the track and one of the guys there saw me run and offered a trade for it, WS7III. so out goes the mega and in goes the ws73, glory at last. the mega had a bit more kick way down low but the ws7iii is just butter all the way up, plenty of juice. i was running the only plugs i ever run, odonell 99 med/cold standard and it had a mega 2046 pipe with it. i think they sold this package before as the "power pack". very good overall, actually great, but i could not pass up on the RB.
LOL ! Now do you see why I called the S5 a Sport motor when compared to the Picco .21 ? That ZX-21 is identical to my favored JPX 21/Picco P7R/Drake .21........ I got alot of flack because I said exactly what you are now saying when comparing these engines....
i knew it was a sport motor, i just would not own up to it since i always do well with it. the new rb sure is a step above anything else i have driven. if the picco is the same as the mega, a lot of guys down here need to learn how to tune cause i've never seen a picco or jammin run like the mega does. it might be a picco made motor (now nova rossi made) but something is definitely different in the mega over the picco or jammin. i have not seen a drake motor out here yet, or noticed one.