Air box lid on a 400ex?

[Crispy]

So I have my new (stock) 05' 400EX and I was thinking about taking off the airbox lid after I get my HMF slip on pipe in friday, now just a few simple curiosity questions.

1). Is anything I should look for as far as problems after riding it with the airbox lid off.

2). Any problems that might happen?

3). I'm guessing I should wash the air filter after every ride with the lid off right?

And yes I do have a performance twin air filter in there right now.

Anything else I should know or be aware of?

[svtbolt04]

Just jet it to run with the lid off. It should be fine. Clean it whenever you want.

[WAKORB]

i found these to be very good for taking off the lid

http://www.fmfracing.com/dynoroom.asp#yam4

[Crispy]

Thanks guys If anyone knows any place to pick up JetKits in Orlando Let me know ! Thanks.

[Yamaha72]

those FMF dyno sheets are full of SH*T theres no way a stock Blaster has 10 horsepower and a warrior has 32??? a blaster and a warrior stock vs. stock the warrior might be a little faster not 22HP worth though. 

[Yamaha72]

www.toomey.com shows the stock horse on a Blaster as 20and my friend told me that a warrior is about the same just under 20.



http://www.toomey.com/image/products/blaster/BlasterFinalComparison.jpg

Heres the Dyno sheet.

[Chevy1500z71]

wut svtbolt said, but they make airbox outerwears also if you want to look into that, there only like 2-30 bucks