What kind of mods. do you recommend for a stock Z400 airbox. Let me know what you suggest and what you have tried and what do you think about airbox vents. Let me know.

Thanks,
Knowles

 

I just ordered the Prodesign foam filter set up. See my post.

 

Call alba motor in san diego and order the adapter and k&N filter for 79.00 the lose the snorkel and the air box lid....The go anywhere and buy a 155 main jet(desert application) or a 152.5 for higher altitude for 75 cents...thats it !!makes a hell of a difference for under 81.00

 

desertdemon-You kept your stock pipe??

 

Used the Alba K&N Kit, Removed the endcap from the snorkel, jet up to 144.
I ride in alot of mud/water trails.

 

No..I bought the yoshi comp exhaust..

 

Here's a list of what I've done (besides adding armor) all prices don't include tax or shipping & handling and are in US funds

(Free) cut out pea-shooter from stock exhaust pipe
(Free) remove snorkle cap
(Free) cut holes in top of airbox lid
($5) 140 Main Jet (has not been trail tested, may need 145 or 150)
($0.20) two No.4 washers to raise needle height (has not been trail test, may need to use only 1 washer or 3, it definitely needs a washer)
($5.00) speaker fabric to act like an "outwear" over airbox lid
($22) Uni filter


The re-jet, exhaust hack, Uni filter and air-box hack (Total:~$32) have definitely helped the Z's low end. It seems to stall at a much much lower RPM. It hits the rev limiter a bit faster now (according to my butt-dyno)

You can spend $70 for the alba K&N and outwears + $60 for a dyno jet kit or you can do what I did for 1/4 of the price. [img]i/expressions/face-icon-small-happy.gif[/img]

If you have any specific questions, feel free to PM me or reply here. I always check threads I've posted in.