His motor sounds good actually. A little rattley on tickover like most busas (camchain), but fine otherwise. I don't think you'll find much power loss there. Tis obvious the oil gets changed regularly.
Anyway, it's a low mileage busa now...
Expected? - TBH he shouldn't be expecting anything on a new bike. You have to learn it first if you don't want a nasty surprise. Most of us learn this when moving up from 125's....
Was just gunna say that - sounds good apart from all that popping which make it sound like poor programming ; stopping the spark but not the fuel whilst shifting, dumping unspent fuel into the exhaust, then igniting it all on the next exhaust flame front. Great for pipe life.
Who's buying them all then ? - I mean this is a Busa forum and no one here's owned up to being on the list
( I'll bet John's secretly buying them all for his Kawasaki fwiends now they can't get new ZX's - he did mention a group buy)