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Thread: 300R tune
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05-25-2024, 11:39 AM #1Team Member
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300R tune
https://www.speedmastermarine.com/pr...0-outboard-ecu
Is there someone here with deep pockets ready to try this? Or is this a known good already? $6K Cdn, works out to $4384 in real money
SR360 OUTBOARD ECU
SR360 Stand Alone Engine Control Unit
Designed for Mercury 300R 4.6L V8 Outboard
Utilizes all of the OEM Sensors & Emissions Control Devices
Plug & Play Installation - IP67 Water Resistance
Premium 93 Octane Fuel Required
360 HP @ 6500 RPM (+60hp)
319 lb/ft @ 4450 RPM (+20 lb/ft)
7000 RPM Rev Limit (+600 RPM)
Professional Installation Required
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rsess thanked for this post
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05-25-2024, 02:23 PM #2
Strictly for racing, silly boy...
*For Closed Circuit Sanctioned Event Use Only*We have invented the world; WE see
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05-25-2024, 03:20 PM #3
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05-25-2024, 07:11 PM #4
In Super Stock racing with the 300r, they pass out and collect ECUs before and after the race to prevent Hanky Panky
My ZG1400 is on its third and last "Flash" with ZX exhaust.
My diesel pickups have all been deleted and programmed.
Even my KTM dirt bike has a Piggyback
I understand.We have invented the world; WE see
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06-02-2024, 09:29 PM #55000 RPM
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CUDA thanked for this post
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06-03-2024, 07:44 AM #65000 RPM
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scott reierson thanked for this postRyan Beckley liked this post
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06-03-2024, 12:39 PM #75000 RPM
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06-03-2024, 01:31 PM #8
I misunderstood, that was the procedure when they were using the 300XS, The 4-stroke is harder to get at, so quick swaps can't happen.
Congratulations, I was expecting Jackhammer to catch up. I saw one turn; they tried to make an inside move on you,
They got hosed down and lost lots of ground that they just couldn't make up in the calmer water,
Interesting, the DWs seem to do better in smoother water, the Victory boat, with its large steps, likes ruffer to get loose
It's a Great class. Good to see a fresh face in the winners circle.We have invented the world; WE see
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Ryan Beckley liked this post
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06-04-2024, 03:30 PM #95000 RPM
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06-04-2024, 03:30 PM #105000 RPM
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06-04-2024, 04:07 PM #11
I know nothing about the above, but where there is a will, there is a way. In a pure stock class, one little change, as stated.
over a long course makes all the difference. I've heard other rumors about another team, It's Human Nature.
In outboard drag racing 20 years ago, a guy got caught pumping water in and out of his boat to make weight
I highly doubt he's the only one that's used that.
Someone might figure out how to change the signal to the ECU to change it's commands.
The RPM record is remembered, not sure about Timing advance ect.We have invented the world; WE see
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06-04-2024, 11:44 PM #12Supporting Member
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The "race tune" is a touch of timing. The motors are making 330+ hp stock so spending that money for a 30hp gain (if it was real) is a pricy increase. Its going to take more than a tune to make real power potential from a 300R.
Joe
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06-04-2024, 11:49 PM #13Supporting Member
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cowisl liked this post
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06-05-2024, 06:04 AM #14
If you take the time
https://www.ampefi.com/product/ms3pr...gement-system/
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06-05-2024, 01:59 PM #155000 RPM
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Thank you guys for the info, cool to know there is a "race" tune even if it just relaxes guardian some. Do you guys still think a 15" 300r is on the horizon?
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