You bet your golden watsits they are!

Had my bike for 18months now and done 2 reasonably testing trips. I know i know i'm a lightweight but gotta pay bills. I installed the kev mods (O2 and fuel mod) then a stage two DNA air filter thing and it's like a new bike.

mines a 2010 with stock exhausts so didn't really have any surging but it had the crazy throttle power jerk when coming down from speed. I was constantly changing gears to get at the power and the popping was a bit barmy.

All smoothed out now. Even acceleration, hardly a pop and no snatchy throttle when coming down from speed.

I don't know what my fuel economy will be like but I never got the 300 miles per tank that some mention anyway.

So all good.