With a slip on, no airbox lid and a foam filter setup should i run the stage 1 or 2 jets?

 

If you have any kind of modification to you muffler you have to go with stage 2.

 

wahts the difference? between the two kits.

 

The different kinds of jets, the stage two passes more fuel since you have more breathing thrue the engine. Since he as a slip-on which releases more air.

 

Have you bought the jet kit yet? If not have you seen on the news where they have "DON'T waste your money"? Well they should put this jet kit on there. Imo jut go to your dealer and buy the jets you need and put some money back into your pocket.

If you already have the jet kit take YFZ660R advice.

 

No i havn't bought the kit yet, im still waiting on the parts to arrive. Dosn't dynojet change the needle design along with the jet's themselves?

 

Well let me tell you that it is sort of a waste of money like Yfz450VsBanshee said.I'm running my YFZ with the stock jets with my dr. d slip-on and nothing has happend. And don't really know who started this bullsh!t that you have to re-jet, but oh well I already have them in my rappy so I who cares.

 

Hmf suggest running the clip 1 position richer for just the slip on. Now with the intake and no lid how many sizes should i go up on the main?