Ok, I have redone my exhaust system much like Dave's and Martin's systems. I put the Vetus LSS 50 water lock muffler under the aft cabin closet on a shelf I made just above the prop shaft. That gives me the required drop from the water injection point to the muffler. Then ran the pipe straight back to the gooseneck mounted at the transom. I left the anti siphon loop on the water injection hose high in the starboard locker. That meets the Vetus's installation requirements. So it seems to work fine sitting here in my yard. We shall see when I get into some waves. But, THE BETA ENGINE STILL DIES ON ME!!!!!! It is still getting air in the line somewhere. Its not the fuel level, I checked that. I have at least half a tank of fuel. My Racor fuel filler lid was not screwed on really tight, so I tightened that down really snug. That seemed to help and I thought I had it fixed but after running it for several minutes, shutting it off, then restarting and running for just a few seconds, BAM, the engine dies again. This is driving me CRAZY!!! Any suggestions as to what the problem could be would be greatly appreciated. I will get some pictures posted in a few days of the entire install.