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The generous C-Brat passed along this helpful info for people looking for torque curves and horsepower curves: So there is a thing called CARB (California Air Resources Board IIRC) and they require this kind of data to be submitted for SIME (Spark Ignition Marine Engines) in addition to other...

Hi Folks, Thanks for the reply and DMs. I've decided to go ahead with the regular Mercury 150 4 stroke rather than the Sea Pro. Once it is on I will post some performance data. In case anyone else is doing some reading before making a decision, here is what I found for 2021 engines: In the...

Hi Everyone, I am looking for some help choosing between a Mercury 150 4-stroke (regular recreational engine) and a Mercury 150 Sea Pro (commercially tuned version) for my 23. I have decided already that I don't want the other version of the 150 (Pro XS) or a different brand, or a different...