florida heat slowing ski down

[holeshot1]

what are you guys running now top speed compared to 2 months ago. march 77 during the day

today all i can muster is 73 @ 7980 ish

2019 rxt x
intake
exhaust
scom

[troyheb]

What were the weather conditions and RPM were you went 77. I will assume you are getting your speed from the dash.
What were the weather conditions today?

[holeshot1]

What were the weather conditions and RPM were you went 77. I will assume you are getting your speed from the dash.
What were the weather conditions today?

it was in march and i looked back using accuweather the day wsa 78 degrees high

today was 90 degrees.

also day ago the ski did do 78 in a lake low fuel in the late evening. so it must be the heat.

[SandMan234]

Obviously you need to move north. All the Sea Doos in NY are 4 or 5 mph faster! I hit 53 on my 3UP Spark, 58 degree day.

[troyheb]

Sounds like too much speed loss just due to heat

[DinoMite]

what are you guys running now top speed compared to 2 months ago. march 77 during the day

today all i can muster is 73 @ 7980 ish

2019 rxt x
intake
exhaust
scom

SCOM is maxed out at like 8040ish no way 60RPM equals 4mph speed loss. Could be fuel load, current? 10 gallons of gas is 60lbs or about 2 mph difference less fuel more speed difference, trim settings?

[holeshot1]

SCOM is maxed out at like 8040ish no way 60RPM equals 4mph speed loss. Could be fuel load, current? 10 gallons of gas is 60lbs or about 2 mph difference less fuel more speed difference, trim settings?

dino the 73 run was at high noon 3/4 fuel (one bar down from full) it was a channel but i did go both ways no speed difference. trim was all the way up.

i guess it is what it is for now. until i FLASH the ecu and up the rev limit.

[DinoMite]

dino the 73 run was at high noon 3/4 fuel (one bar down from full) it was a channel but i did go both ways no speed difference. trim was all the way up.

i guess it is what it is for now. until i FLASH the ecu and up the rev limit.

Is that dash speed?

if your below 8040rpm, a flash is going to do anything for you. If you can get more air in the hull that always helps. Get out the old 3 inch hole saw and go to town.

[1tommygunner1927]

Your ski (all skis) suffer a 5% +/- loss of horsepower between spring/summer. Factors are: Air temp, altitude, air pressure, humidity. Other factors (that you control) are fuel weight/rider weight, and maintenance items. A quick check using an engine power calculator showed your ski making 101 percent power in cool dry air vs 96% engine power in warmer/moist air. This is why your ski lost rpm, and it would have lost more rpm without a scom. The same will be true with a reflashed ECU.

[holeshot1]

Your ski (all skis) suffer a 5% +/- loss of horsepower between spring/summer. Factors are: Air temp, altitude, air pressure, humidity. Other factors (that you control) are fuel weight/rider weight, and maintenance items. A quick check using an engine power calculator showed your ski making 101 percent power in cool dry air vs 96% engine power in warmer/moist air. This is why your ski lost rpm, and it would have lost more rpm without a scom. The same will be true with a reflashed ECU.

great info ! thanks