engine alarms@2500 and above
 

I have a 29 scarab and once I get above 2500 rpm's the starboard motor alamr beeps once every 5 seconds and if I push it a little harder 3200 rpm's the port motor alarm starts to go off volts water temp oil pressure everything on the gauges is fine were do I start next

Water pressure?

yup!
Pressure is getting blocked, or retstricted.

I have lots of water pressure plus I have low water pick ups at idle if I rev the motors a little the water coming out of the inter coolers shoots out over 10 feet away

thermostat sticking? or not working?
I was getting the same thing on Monday when running on the hose, found I never reinstalled the thermostat from last winterization :(