No power in top end 2010 xb12 scg

[Tweeds]

Hey guys, I’ve mucked around with bikes in the past but never played with my buell.

Bike idles fine and runs well up to about 3500rpm then there’s just nothing and slowly continues to rev.
I’ve done a TPS reset with no change and am currently draining the tank to remove the fuel pump to replace the filter.

I do have a buelltooth, but when playing around on it I’m not really sure what I should be looking for?
It’s running a k&n filter and a adrenalineR exhaust. I believe it’s running a drummer map?

I’ve read these bikes should really haul and power wheelie, in my ownership it’s never been close to being able to achieve that. Fuel filter and plugs first but then hoping for some advice where to look next?

Cheers