k&n air filter

[scapco at ecentral.com]

Jerry,

I think Steve might be able to explain this better than I, 
but the GPZ really does have an undersized air box for an 
1100 cc motor.  That's why the really big HP gains are all 
with the airbox off.

If you prefer to keep the airbox on, you can always open it 
up a little by removing the intake baffle on the airbox.  
The California models don't have this because of the 
canister emmissions crap.  The difference might only be one 
extra HP, but it will breath better.  Then do the stage one 
or two mods with a nice pipe and you will definitely feel 
the difference.

Charles S.

> Now can someone explain how a pod works better than
> an air box?
> If the box or air filter surface area is not under sized,
> there should be higher pressure in the box when the bike
> is in motion.  Heck, just open your helmet over 70mph and 
> it's more difficult to breathe ..
> I'd really rather not go through a whole jetting 
> procedure.
>