I'm looking for a Dynojet kit for my 01 Raptor. What is the difference between the Stage 1 & Stage 2? They all seem to have the same part numbers?

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2001 Yamaha Raptor
Works Triple Rate front shocks w/ rezzies
Renthal Bars (Banshee Bend)
AC front bumper and rear grab bar
Trailtech Speedo
12t Front Sprocket
K&N Power kit on the way!

 

I believe the diff is in the fact stock pipe or bolt on. My dynokit came with both stages (just a different jet and needle) and you decide, You prob will need a stage #2.