Jetting Starting Point

[fischer550]

I have an fx1, all stock. I am going to upgrade the following:

Skat-trak swirl impeller (17/22)
Mo-flow intake grate
Factory B Pipe mod chamber dented to fit in fx1
ADA head w/33cc domes
Maybe an ignition enhancer later down the road.

I live in Fort Collins, CO elevation 5,000 ft.

What would be a good starting point for jetting the mikuni sbn 44 for my application. Factory pipe has reccomendations, but they are for a stock engine at sea level.

 

[fischer550]

Also, looking for bottom end performance

 

[yamanube]

I would start with what FP recommends. It sounds like you have a stock engine, might need to play with the screws a bit to compensate for elevation.