wha about this???

[XCredrider]

My friend also is debating taking the lid off his airbox and taking the spark arrestor out. What will the jetting by with just these two things and a K&N filter with outerware be in indiana? I know some one on here has had that same setup before and knows the jetting. Also he thinks his air filter will get dirtier. I dont think it will considering it will be sucking the same air it was before.. just more. What about if he takes out the spark arestor and leaves the lid on. Sorry for all the questions but i know someone on here knows the answeres.

Thanks a lot in advance.

a 175 would be about right for him....also, he will definately need to clean his air filter alot more often because more air=more dust & other debris going to the filter