Throwing out a final plea to anyone who may know how to address the above engine codes in any way before hauling boat to Suzuki dealer once again. Too much back story on this thing to even try to go into. Check out my mega thread on Suzuki forum if curious. You Zuki owners probably remember it. Well..... here we go again.
3-1 is IAC valve/by pass air screw adjustment. 3-2 is map sensor 2 pressure detect passage