Chuckie would say the opposite.Call Art at Jetworks, Buy what he tells you to get for your boat. hes the best and his quallty control is like no other. if your going to buy a hooker talk to him first, if not you wasted yo money. i got a 9/15 and used my fiends prop that he bought from art, it hit even harder.
link?If you want more opinions there are threads on pwctoday that provide both pros and cons with input from Dave.
Chuckie is the brains behind XScream motors. He started out as Team Scream. Just as knowledge able as Art.well i dont know who Chuckie is, but you who Art is.
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OEM 08+ RN SJ on left. Impros 10/18 on right.
My ski is a 2011:
ported, b pipe, worx intake, 195 psi, reed stuffers and spacer, pro tec ignition, zero flywheel, bored carbs, prok filters. The OEM impeller hit so hard down low it was difficult to ride at 1/2 throttle. Felt like a light switch. The 10/18 Impros spread the powerband out and made it easier to ride. Top speed was increased with a little loss down low. If your running a mild motor IMO keep the OEM 08+ impeller. I think the OEM 08+ impeller performed better than the 9/17 Impros.