I am making a plenum for the ZZR1200 as the original airbow hasnt a hope in hell of fitting under the rear body panel.
I am putting an K & N induction filter in the air intake box behind the driver. I remember reading on here somewhere about a ball park volume figure for a plenum based on the engine capacity (I know a ball park is probably too big)
Anyone advise. I think it was 1.5x but that seems a bit small??

Measure the volume of the bike airbox, presuming you have it?

[Edited on 20/7/10 by coozer]

I dont have it

PPC mag said 2x engine size when Dave Walker built one for their x flow they were building.

Thanks thats more like it