Loss of power

[Tamstergb]

Out on water loss of power. Only could get up to 5500rpm. Have checked impeller, spark plugs, coils and all hoses. Checked the supercharger seems to be ok. Out of water can get up to 8100 RPMs. No vibration, did hear a sound like suction and then change in power. Like a vacuum getting clogged. Anyone have any other ideas.

 

[Luc Lafreniere]

No check engine light??? If so, you should get the error code.

 

[Jet Boat Tom]

I would definitely check the hose going from the supercharger to the intercooler/ intercooler to throttle body.

 

[Just1more]

i’m helping someone trying to locate this and have no idea where it is on their boat…could you possibly point me in the right direction?