Airbox

Courtesy of Keman

The stock airbox assembly in your ZX2 looks like below. Minus the black tape, of course. The opening facing to the right is approx. 1.5 inches in diameter. Nowhere NEAR what the ZX2 needs in order to breath. It draws air in from the right, uses the resonator under it to quiet the intake, and then passes it through a cone filter. This is highly restrictive overall, and chances are you've taken the first and second resonator off. But enough is never enough, so break out that hacksaw, baby...

THIS:

BECOMES:

(sound of chainsaw)

THIS:

Now that's some superior flow. Gone is the two port intake and in is the roughly 6 inch (15 cm) opening to allow your ZX2 to breath like no tomorrow. Cut exactly to the right of the outline drawn around the word "AIR FILTER" that's been molded into the housing. That way you leave enough room at the end to attach a new enclosure explained in the next modification. This existing setup I ran for many weeks, unbeknownst to you ZX2 list members. There just was no way I could explain it without showingyou pictures, I didn't want anyone to go out and take a hacksaw to their airbox and do it the wrong way. If you attempt this mod, do it EXACTLY as shown above, as there is no second chance. I took a file down to the edge and cleaned it up nice and smooth as well.

Run the stock airfilter or a K&N filter (as shown later)with this mod. Don't worry about water getting into the setup, as the entire area sees very LITTLE water. It can't get in from underneith, nor can it get in from the front of the car. If you do it right, the air filter will still remain somewhat tucked inside of the plastic housing, protected against the occasional shot of water you might give it with the hose.

You will now only use two bolts to hold the airbox on, the third normally used to hold the other half which you should have thrown into the garbage by now. ;) The bolts your using at this point, are on rubber mounts, that is, the airbox will be able to shift around a bit. It won't feel tightly mounted, but this is perfectly normal.