Air Box Gain.

[Misfit138]

How much power will I gain on my 300 EX with the airbox lid off????:confused:

[JIMFROMTEXCO]

you will lose hp with out rejetting it. it wont be anything too drastic a little better throatle response

[Yippie-Ki-Yay]

I wouldnt do it, i go to work with my dad, hes a honda service manager, an i have seen waaaaay to many effed up engines due to dirt and fine sand getting into the motor, and they dont have the airbox lid on.

[JIMFROMTEXCO]

thats prolly from not maintaining your air filter. if you keep your filter clean and oiled it will be fine.

[bwamos]

Meh.. that's just people who don't know how to maintian their filters.

I've been running no airbox lid and a K&N filter on my 300ex for 10 years w/o any issues. If you remove the airbox lid.. remove the drain plug below.. so it doesn't "hold water" ;)