Quote Originally Posted by mjb929rr View Post
Altitude is a killer for boats. Our local dealer wonÂ’t order a makai without a 450 in it. IÂ’ll be honest our new sl has the 575 and it is barely adequate in Pueblo, altitude 5k feet but density altitude is 8-10k in the summer.
TIL / thanks for the heads up.

I had no idea about density altitude. I'll use Larry's app this summer and try and see what my true power loss is.