jakob
Newbie
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- pat hauck apex
currently i have one of the 4 special edition pat hauck sleds. It has mpi suppercharger pipes clutching low comp pistons rods studs. It is currently 240 hp what all do i need to bump it up to about 300 with a pulley swap. I was told i need injectors a different fuel pump and oviasly some race gas. I was just currious on what all i need to make some big power.


sheetwright
Northwoods Snowmobiling Facebook
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- 2021 Yamaha SRX
Call Matt @ mpi. Then call ulmer racing. Of you are at 240 I am assuming you already have a larger fuel pump. There is an upgrade in the mpi kit from the stage one to the two. 11-12lbs is max I believe on a stage one kit.