Ulf, if the Ram Air is a slight improvement, how does this compare to the K&N's ? (of various sizes)
And surely either of these must be a vast improvement on the stock intake system ?
They both work and they do it the better, the more other performance mods you make.
On stock bikes it is not much.
But with a good exhaust and cam the stock airbox becomes a real bad restriction.
KN should be the biggest size you can fit as their surface is smaller.
The Ramairs have got a nice bellmouth shape inside.
But on the dyno the difference between the two was neglectible.