Just wonderin bout my air box lid...

[Flyin-Low]

will runnin my ex without a lid expose the filter to too much mud if i ride the woods alot? and will it make enough of a differance in air flow to require a change in the jetting?

Prolly just sum dumb questions to most people :confused: :D

[NCexRider]

Yes you will get trash in your airbox if you ride in the woods with no lid. It's not even worth running without it unless you're piped and jetted anyway.

[Brehmmotorsport]

Go to ebay or ehsracing.com and buy a filter kit for your air box lid. Keeps all the crap out but still lets all the air in. I race xc and never get anything in and did not have to change jetting from my mx times running no lid at all. It is a billet aluminum ring that compresses a outerwear into your lid. A 400 has to run with the lid off. Without it off the power sucks. I run a stock motor with this lid and a tc exhaust. I can run with a 450 on the bottom end in the woods. If your going to run no lid make sure you at least get an outerwear for your filter.

[Brehmmotorsport]

Oh and yes you will have to rejet if you remove the lid.

[Brehmmotorsport]

with the setup you have listed though you will see big increase in power. They sell outerwear kits that velcro to the airbox but I tried one and they suck. Get the ehs setup.