Buddy just bought an 06 500FM. I’m replacing all the worn out front end crap and I’ve also removed the obnoixious HMF that was on there when he bought it and putting a stock Honda muffler on there.

I know most people change the jets when they put one of these loundeners on a machine, and there was a dynojet sticker on the side, so that would reinforce the idea that it’s got aftermarket jet in there.

What is the stock jet size, and am I correct in my assumption that running this rig with a bigger jet in it with the stock exhaust will make it run rich/hot?