I was talking to a computer expert all of the ECU's cut the fuel supply off when you hit the rev limiters. The problem is my boat weighs over 8000 # I can't feel it hitting the rev limiters. If they were set at 5300 like they were supose to be, I might not have this problem.:hothead:

I agree with teambaja,befor it goes back into the boat ,DYNO. on the dyno you can look at individual E.G.T. and see the real story of each cycl.

I had a set of rebuilt 502 EFI's put in my Sunsation last winter. After 65 hours both motors broke at the same time. I do believe the #8 cylinder on one engine melted a hole the size of a nickel and the other engine had the #4 and 6# pistons melt down around the engines. Blew oil everywhere and now both motors are sitting on the floor again. Engine builder cannot figure out went wrong and neither can any of his peers. Very strange, why both motors? Everything is stock and I hadn't had the boat wide open the last three times out so it wasn't even being pounded.