So I just got a brand new raptor 700 yesterday, and already it's too quiet for me. I'm not looking for any more power yet, right now it's got all that I need. I was just wondering that if I took the spark arrestor out of the stock exhaust or replaced it with one of these CFM/pheonix tips that have been on ebay, would I have trouble with it running too lean? If I would need to get an efi controller just for this I won't bother.

Thanks.

 

I run with no spark arrestor and the air box lid off runs great.