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Jan 23rd, 2013
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ECU flash options? #13331832 11/04/19 04:00 PM
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bassmanrudy Offline OP
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So I'm looking into getting my ECU flashed to bump HP some.
Mercury 90HP 2 stroke. Not sure the exacts til I look but it's an Optimax something.

Has anyone been successful in doing an ECU flash on a 2 stroke and if so who did you use?? So much stuff online but honestly not helpful. I've sent several emails to those companies but usually get a "no" reply pretty quick.

Thanks for the help!


"I'd Rather Be Fishing" smile
Rudy
Re: ECU flash options? [Re: bassmanrudy] #13332028 11/04/19 07:20 PM
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steve@hydrodynamics Offline
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check with Eric at simmon motor sports. he's your best bet for that engine flash


www.hydrodynamics-usa.com
info@hydrodynamics-usa.com
903-763-5225




Re: ECU flash options? [Re: bassmanrudy] #13332381 11/05/19 01:44 AM
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bassmanrudy Offline OP
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Thanks for the recommendation Steve! I talked to Simmons(some girl as Eric wasn't around) and she said they could flash it to 120HP from the 90. That's a 30HP increase which I would hope equals a 5-10 mph increase and better fuel economy by running at a lower rpm when not in a tourney. The boat is rated to a 135 so not overpowering it or anything.

Doing some math based off formulas online-
current boat "loaded(estimation with fuel/gear)" is 2600lbs ÷ 90 = 29lbs per 1 HP
Upgraded motor added in- 2600lbs ÷ 120 = 21.6lbs per 1 HP.

$675 ÷ 3 = $225 per 10HP gained.

Might have to reprop from a 19P to a 21P but that is still TBD.


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Rudy
Re: ECU flash options? [Re: bassmanrudy] #13332994 11/05/19 04:41 PM
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steve@hydrodynamics Offline
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the re prop (up in pitch) is where the increased speed will come from.


www.hydrodynamics-usa.com
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903-763-5225




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