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Since I have the MMI SS standpipe, I don't have water batching...just a nice steady stream and the melodious purr of my A-4. Also, since I changed to the standpipe, I don't worry about flooding the exhaust manifold during hard starting. If your boat's layout is agreeable, I highly recommend the standpipe upgrade. My J12 spark plugs are not sooty.
I know this post isn't really helpful to the thread, but I do feel a debt of gratitude to Don for putting the standpipe in the catalog. It is superbly engineered and remarkably trouble-free. Thanks Don!
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Tom
"Patina"
1977 Tartan 30
Repowered with MMI A-4 2008
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