Got a 2007 profile 260v been fighting for two months.
When you start it and it comes back down to idle it acts like some one turns key off and back on. It drops Rpms and then right back up with one beep. Also lost about 500 Rpms while running down water.

Changed plugs
Wires
Coil packs
Ignition switch
Crank sensor
Relays
Battery
Checked fuel pressure.

Any other ideas before I give up on the boat and let it set

Did you change fuel filters? Scan it for any codes? Possible IAC valve malfunction... Look at the fuel boost pump... on the inlet side... check the metal screen for debris...

We're is this metal screen at?
Is it inside the cool fuel housing?
Yes I changed fuel filter and the little disk /screen right under it.
Also checked fuel pressure. It's hold 40-45 psi.
Would the iAc cause it to do this while running down the water or just at idle?
I scanned for codes and it had crank cam and map sensor codes.
Iv replaced crank and map with no improvements.

Thank you for your reply

Yes, its located at the cool fuel pump inlet side...

IAC generally makes the idle issues appear if there is an issue with the motor. Regarding the top end issue... I have seen a few inlet filter screens clogged with bugs, shavings, ect.

Okay. I will pull pump out of the housing and check that. I pulled the line off on the outside and didn't see it. I guess I didn't go in deep enough. Thank you il give it a try.
Really hoping to figure it out. Been working on it all summer and kinda getting ready to be back on the water before it's over for the year.
Never missed this much time from the lake and every shop Iv called is booked til after Labor Day.
Beyond frustrated!!!!!

Also scan for codes to narrow it down

Did you replace the cam sensor too?
You can't just scan it once. This is one of the reasons I advocate so much for everyone with one of these boats to own their own scanner, or share one with a few friends. You need to run the boat WITH the scanner attached. Clear the codes. Then run it again; all back to back to back.

I have now changed the complete fuel pump housing filters pumps and all with no improvements. Bought Rinda disco mm software and scanned it multiple times and not showing any codes.
Idk what else to do with this thing been an issue for a year now!!

I'm leaning more to a bad connection, or IAC.
The one beep gives me the thought the 12V power is not clean. May have some corrosion

BTW, you could get more input if the question was asked in the general area. Your limiting your question to just folks that look around like me, or those with Profiles