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SPI VS DYNOPORT Y-PIPE

L
Jun 4, 2014
72
1
8
North Norway
as title says, what kind of experiences people have? has a pro rmk with mtntk full mod kit that works very well, but believe that the original y-pipe slows little effect because it does not match the exhaust ports 100% anyone have any thoughts on this?
 
L
Jun 4, 2014
72
1
8
North Norway
I have not dynotestet snowmobile yet, but will think I have 160hp + in the engine fan when I was running with 76g weights, but feel there is still a little too light weights, has ordered a spi y-pipe and hope it will give a little more power
 
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