I think I need more low end torq. Im a smaller rider, weighing in at only a 150lbs. I ride a 1994 Yamaha SuperJet 650. I love performing various tricks & freestyle on it and I'm getting to the point where more low-end kick will really help me out. With all this impeller pitching and Yamaha impeller choices, its hard to figure out what would be best for me. Which can you recommend for my type of jet ski riding? Thanks in advance.
You only need a 175-180 psi head. You can have your head machine or buy an aftermarket head. Flame arrestors will help letting engine breath better and remove the choke plates and install a primer kit for better flow.
Impellers, if your looking to just replace the OEM set up for now, Go with a Solas I or PRO. They give excellent better low end acceleration and even a little more at top.
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