Try putting in 23.2 for the slip calculator, since thats what a 24 bravo measures out to be about. Slips even lower.

I'm with you, I think he's down on power. Whats the build specs?

Yes. That's the direction I was headed is his power is off. Not an issue with the notch.

beat me to it,,my guess,,540-550hp

how about some info on the engine.

5500. 599 hp
4700 592 tq

509 stock gen 6 block
Merlin iron heads 320
Merlin intake single plane
850 qf
243 248 630
Dry risers
Harden exhaust manifolds
9:1 compression
Je mini dome pistons
H beam rods

With that cam, not surprised its going faster with the smaller prop. Try a 22p bravo one.

Where did the HP peak ?

Also is the hull stepped or not?

Then let's go to the dyno. What exhaust on the dyno and what exhaust in the boat. You can easily leave 40 or more from dyno headers to marine manifolds.

Stepped hull
Harden cast aluminum manifolds
Dry risers wet at the tip

Dyno headers. When on dyno