Unrelated questions:
what prop and size you running ? Grar ratio ? I forget size if your boat ? Current speed at wot ?

sory no hard filings i hope yust lack of gramar

prop size 24...bravo 1 stok...cris craft boat...speedometer not working..

put a gps mph app on your phone.or kph

yeah...i do that but today i had fuel pump problems so i could not do that...i've posted that this morning maybe nobody saw that...runing aut of fuel at wot...

Im not sure on the HP pump maybe SB knows

when and if you have the time can you shine a light at my fuel pump problem....thank you in advance

If your fuel pressure remains above "6psi plus BOX PRESSURE" then you're NOT suffering a fuel supply problem.
At WOT (wide open throttle) box pressure and manifold pressure are very close, so you can use that as a reference.

good morning i yust got up.Ok i undersrand my pressure is ok but my volume i what im askung about..It is like this...I run wot for 1 minute and then the engine starts to lose rpm...I lover the trotle to around 2000 rpm wait for some time and then i can run wot again.Is it fuel pump volume small.

Well….I guess you could be correct.

Floats set too low or needle and seats too small could do this also. Ie: keeping good pressure but not enough volume. One would think it would happen faster than a minute, but that’s just thinking.

Be careful running it the way you have (wot rpms falling after a bit) as this can cook things fast.