For those who have taken their wakeboard boat to Powell, has anyone noticed if it ran or sounded differently. As you can see from my profile, I have a newer boat (2007) and I am wondering if there is something (computer chip, etc.)that adjusts the timing for the higher altitudes. The boat ran fine under full power but when I was yanking people out of the water, it almost sounded like I have an exhaust leak, plus it didn't have the pull I normally have here in AZ. I have yet to run it here in AZ since I got back to see if I have an issue or not. Any input will help and hopefully put me at ease. Thanks, guys.
I live in Phoenix and my 2000 SAN pretty much ran the same there except that it seemed to have a little less of a hole shot due to the altitude. I roll with 2000 lbs. of ballast and my hole shot at Bartlett is great but it seemed a little more sluggish in Powell. The engine and exhaust sound was exactly the same though so you may have an issue. I would take the boat out here and see if everything appears normal but you have my experience above. Good luck and hopefully everything is ok.
My boat is an I/O which is different than yours. With the altitude, you might try to change your prop to a lower pitch. My boat runs best with a 21 pitch at sea level, but runs best with a 19 pitch at Lake Powell.
I noticed a loss of some power at Powell, but did not sound any different. I normally operate really close to sea level. What i couldn't figure out was why i had to bump up the RPM's in PP RPM mode for surfing. Might have just been the amount of weight in the boat but i don't think it was any different than i normally run (people+ballast). I really wish there would have been more gas stations, ran out 1/2 mile from dangling rope and luckily got pulled in by a houseboat. NOw i know why people run around with 6-8 gas cans on the swim deck. What a beautiful lake!
Interesting Art, that's more like 4.5% loss per thousand ft. No wonder when I took my old V-6 I/O up to Shaver Lake (5000 ft.) it was such a dog... Anytime you want to boat down at sea level, let me know... Maybe New Year's Day??