I could tell more of a difference in starting, idleing, and running with the K&N filter and jets than with the supertrapp alone. By all means get the jet kit and get a K&N filter "somehow, somewhere" first. It will make more of a difference alone than with the supertrapp alone. If you want more top end then add the supertrapp last. Also how much did your speedometer cost and where did you purchase it at?

 

Got the factory speedo kit through the Yamaha/Honda/Suzuki dealership here in my hometown. They ordred it and it cost 85.00. The do give a 15% discount if you've bought an atv from them so I guess was $100 normally. Like I said, it's a piece of cake to install if you drain the oil into a pan instead of on your chest and neck, like me!

 

I have heard a lot about the GPS I am starting to lean toward them for a speedometer. I can get a Garmin etrax for $109 so far.