Hey guys, im sure this topic has been beaten to death but i hear mixed opinions on the subject and just want some clarification. All i am running is the K&N replacement filter and the M4 gp slip on, but it is definitely running lean. I do not have an ounce of soot on my exhaust either with the stage 1 insert or the stage 2 silencer, they are as clean as a whistle. Obviously i will benefit from the pcv but since i dont have 3 bills laying around i was wondering if its something i can wait on? Then again nothing is too good for my baby and i will get the $300 if its something i should have. I've just always heard its safer to be running rich rather than lean whether its a car, truck, or bike. Thanks for any help guys. im gonna get it eventually, just wondering if i should get it sooner than later.