The air valve closes off the bowl vents under WOT (and when the engine is off). This is the reason why the 93+ ZX7's have such large main jets. It is extremely difficult to get fuel to flow thru those jets when there is a wall of air inside the bowl restricting the fuel.kleen air mod has nothing to do with how the bike is jetted, other than maybe a small tweak to the pilots... and by small, i mean I dont think it needs anything but am covering my ass.
On your own bike? Your bike doesn't have ram air, which is where all the problems occurr with the air valve and float bowl crap.Well I know that with my mods I needed to go larger and still need to go a bit larger on the main jet.
Probably because your float height is wrong. And the pilots were too lean from the factory from the get go.If you needed smaller jets when removing the kleen air crap, my bike should be rich as fuck considering I have larger aftermarket jets and in fact I need larger pilots because it is 3 turns out and still too lean.
Thank god this forum has an ignore feature.
BRB, I have to go spend hundreds of dollars to properly set up my carbs because nobody in the history of internal combustion engines has ever been able to do so without a dyno.