The reason I ask is that I'm considering a Powerquest 280 that has a Precision Marine 502 that has been modified to run naturally aspirated with 540hp at the crank. I believe this is equivalent to a HP525's power. The power was made with Dart high flow aluminum head, ported and polished intake manifold, high flow exhaust manifold, and a different cam. ECM tuning as well of course.

Am I basically getting an HP525? If so, WOW!

Approx How Much more HP with the remap????

I believe he said 30-40hp more per side, but you have to run 91 octane. He can also raise the rev limit to 5850 safely.

Nice and definately something to consider. Thanks

525s range from 538 to 572HP i have seen on the dyno.

A 525 makes about 500 at the prop. Most will dyno, as JC mentioned, at least 540ish hp at the crank. Been done many a time. Most loose about 10% hp once they make it to the prop via bravo. I dont think merc lists any motor at the prop b/c it doesnt tell anything. They make too many drives and motors that can be interchanged like a 525 with an XR, #6, and according to merc racing now an NXT. All those drives eat up different power.

I wonder who else can raise the rpm?