06' airbox lid

[400ex45]

Well i just in stalled my full system lrd pro4r pipe. and by the why i love it. it gives me good power and it is not that loud. but i am trying to jet it and the thing will not run right unless the air box lid is off. and i was wondering what you guys do to help prevent getting mud and water into the air box with the lid off.

[thugpassion4lif]

What type of riding do you do? you can always try a billet adapter & K&N w an outerwear, probly not the best for keeping out water and mud though

[400ex45]

i run harescrambles and trail ride and sometimes get into alot of mud. i have a uni air filter on it know. i do not trust k&n for air filters i have seen way to many bikes got through rings and stuff from running k&n. i was thinking maybe the k&n lid or the outerwear lid but i dont know if the will help from keeping the water out though

[wanta450]

why dont youjust get it jetted right so you can run it with the lid on:rolleyes: :confused:

[400ex45]

for one thing lrd says to take it of and another the lid restricts so much it is unreal. lrd says to run a 165 main with lid of and when i was trying it with the lid on i was clear down th a 145 and was still running like crap so i took it off and put a 160 in and it goes now.

sounds like your jetting is off

[400ex45]

i can get the jetting dialed in but i want something to protect the box mud and water then i can jet it because i dont want it open. so i know anything that will protect it will change the air flow.

[Dave400ex]

EHS Racing lid...

[400ex45]

Originally posted by Dave400ex
EHS Racing lid...

i think i will try that out. thanks

[the predator]

just cut out the back side portion of the stock lid.

[400excracer]

Originally posted by Dave400ex
EHS Racing lid...

I have one of these on my 400EX and I love it. I race XC and have never sucked any water. When I put my pipe on, I got a dynojet kit and they said to take the stock lid off. It ran perfect with the lid off. When I put the EHS lid on, it ran perfect. I will be ordering one for my 06 450R in a few weeks.

[yamablaster24]

well the airbox is so high up and not much can get in there. On my 400ex i went to a 70 mile trail ride and i was going through creeks over my bumper pinned and never got any water in.