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48 Posts
Discussion Starter · #1 ·
Hey Guys,

I bought a set of pipes for my wife's 2001 MountainCat 600 EFI. I was told that they were for an EFI model that had APV Valves on it. I was a little hesitant, but price was way to good to not try it. Once I bolted them on and took it for a quick test ride, I checked the plugs and not to my suprise it's lean. I'm looking for anybodies suggestions as to what to do.
1) I can buy a dobeck EFI controller.
I have heard alot of guys saying that I can simpley raise the fuel pressure in the EFI system. I have no experience with this and I'm looking for suggestions. I am also wondering if a person can even up the fuel pressure?

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