Quote Originally Posted by Isaguel View Post
Great thread. Lots of great info on engine performance and effect of altitude on power. I'm glad I brought up the age old topic about altitude, turbos and SC's.

Now, question #2:

I have a lawnmower, a Toro, B&S engine, that just keeps sputtering, and .......
you should dump the Toro and get a Honda.

My input on the engine stuff. We have a 19 Mondo with the 400. It is small than you all are talking about. most of our use is at 5600'. surfing we have about 4800# plus people. current prop is what ever the upgrade prop is. (next step is to upgrade this) surfing is fine and about 3400 rpm. pulls up fine. it will really struggle to get over 15-18 mph when loaded, if it does get there.

wakeboarding we drop ballast down, we are not superstars. although we have had some with us and the wake is fine for them.

when we go to Lake Powell at 3600' there is a huge difference in the pull, with everything else the same.

for the $ upgrade, i do not think i would take it.