Hi Peeps,
Dont suppose anybody knows what size jets need to be changed to after fitting K & Ns to an NC31, i know it only gives you an extra 2 - 10 bhp but every little helps.
Cheers Lee..

are you talking pod filters?

YOu have no chance of getting 2-10bhp out of anything like that mate..serious work required to rtake a bike from 53 to 63..

I'd get it dyno'd after you fit them adn see what the air/fuel graph is like and go from there.

Cheers for that mate, was only going on what the add says for pod filters about the 2-10 bhp. think ill give them a miss seeing as she 's running fine...

Concidering I got 0.77hp from an aftermarket filter, 2-10 seems rather, erm, optimistic.