Thank you guys. Great input.

The boat is the same boat that you mention and it was again traded by South Austin Marine to its current owner in Stocholm, Sweden. This boat has original 700 motors, not the 662 EU version.

I will talk to the local guys who mounted the Whipple kit.

I guess you are right about the fuel/knock sensor thing. We need to test it with better quality fuel!!

I will keep you posted. But I think the boat is taken into storage right now. As it has the stage III it should have 865 hp!!

Again, thank you.

I am installing 1/2 spacer on mine next week because my slip is 25%

I let you know how it goes

Thanks. Great. I guess a boat that the props never "loose grip" all of a sudden will go faster in a long run than one that goes potentially 2 mph faster but will have a few hick-ups.

From my experience, slip in itself is not neccesary an issue as long as the boat is faster. For example a single outboard engine boat with extreme engine height and a high pitch prop can go faster than the same boat/engine with the engine down and less pitch althouth it gets a smaller amount of slip with the prop more submerged. But not sure if that applys to inboard engine boats though... Input on this?

We are testing next week I let you know

Boat gets on plane easier did not notice any top end lost

Handles and feels better

Dropped my slip to 17%

I am very pleased

Are yours 6 blades also with that kind of slip ?

yes

all 700 nxt #6 boats came with 6 blades frome the factory

prop slip

Why wouldnt 1075 boats run 6 blades , both run #6 lowers why the difference ?

when you go 120 plus mph you always use 5 blades

Your so smart