[jasonljohnson]

I have a set of Speedwerx pipes on my F8 carbed motor. I just bought an 03 f7 EFI with all of the small performance upgrades. I love the power it has for a stock reliable sled in the mountains (High altitudes) but wish it was louder.
I know these pipes will bolt right up and sound great, but I am assuming it will cause some problems or not run right. I don't know much about the mechanics of a Snowmobile engine and or back pressure needed.

Can anyone ad some light to the subject?

 

[Hooperdog]

Call Speedwerx you will need a Boondocker control box or somthing of that nature. Call them and ask them is your best bet.