Thread: Need some info...
10-15-2009, 09:03 AM #1
- Join Date
- Oct 2009
Need some info...
09 Yamaha fx sho
mods:riva air intake
riva ff exhaust
riva intake manifold kit
Do i need to do impeller?
thinking dynafly 13/22?
10-15-2009, 10:00 AM #2
Any time you increase power output you need to increase pitch of the impeller to match the power. The 13/22 Solas would be a good one. It's the same impeller Riva recommends with the stage 1 kit. Basically same performance mods as yours.
10-15-2009, 06:19 PM #3
Engine mods without an impeller will not give you gains in speed.
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