Anyone here been monitoring/tuning by their exhaust gas temps on a boat ? What kind of numbers do you look for, and how do you go about lowering or raising them. I have researched it and I have figures in my mind, I also know my approach at changing temps. I want your input. I purchased a Computech EGT Plus system and just finished the install, which was a piece of cake. Off to gather some data this weekend, thanks for your input, Jack.