Anyone know if my stock air filter (lt r450) is good enough, or should i go ahead and replace it right away? Also it has a large foam cover on the filter, do you think i could ride dirt trails with the aribox lid off?

 

They are junk, mine ripped just putting it in. Do yourself a favor and get a UNI or TwinAir filter. As for the cover, if you will be riding in dust or water, leave it on.

 

Get rid of the stock filter and go with UNI or TwinAir. You already have a Cherry Bomb and should NOT have the air box lid on. When you installed the CB, you should have removed the air box and pea shooter from the pipe. It will run much better.