i owned 2 sabres with efis (95/98) i turned a 23 tempest plus with a great hole shot and ran 65/68 mph (by radar gun) turning 57/5800 rpms with 2 in boat and gear. i was told my rpm gauge was off, but had them both checked by dealer and checked ok, oh i did have the hole plugged in the prop. if you need a tip on a good place to get a prop at a great price you can email me at trapperjohn0022@yahoo.com.. good luck