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Discussion Starter · #1 ·
I have a 99 600 MXZ , it has about 3000 miles on it. I have made the following mods to the sled. It has a RK tech head, dynoport pipe, have used both a MBRP race can and stock can, V-force 3 reeds and I use dalton adustable pin weights. It has a straight 50 helix and 227 ramps (*%@ !!!) It also has 280 mains that for the most part appear to be running dark, maybe a little rich on the plugs.The problem is that I come out really strong and run 8000 rpm for about 600 to 700 feet then the revs fall off to 7200 to 7500. Help me out fellas.
 
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