I just bought a new 21' aluminum Jet boat this year but I made a deal with the boat builder that I would supply the engine. Despite everyone I talked to advising me to use an LS engine, I chose to go with a fuel injected Olds 455 just to be a bit different. My Olds has all the good stuff including a full roller valve train, billet mains, forged pistons, h-beam rods, Edelbrock heads, MSD ignition and a custom stainless exhaust. I modified an Offy intake to accept 36#/hr injectors I'm using a 1000 cfm Holley 4bbl throttle body. I'm expecting it to make about 450-500 hp and a pile of torque. Here's where I would appreciated your input. I chose to use a FAST EZ-EFI ECU because it's dead easy to hook up, it was relatively inexpensive for the multiport kit (particularly since it self tunes so no expensive dyno-testing sessions), and most importantly the ECU is advertised as being waterproof. I expected a bunch of retro-boating guys like me to be jumping to this product but so far I'm the only one I know of. Can the FAST EZ EFI product be used successfully in a marine environment for my application? I've got the engine installed in my boat finally but have to wait 'til spring to run it as I live in Canada and the suspense is killing me.