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Mercury Marine 350 Mag 5.7L Mpi V8 2010 - >

Power 300 HP / 224 kW
Fuel Petrol
Version 2010 - > dts ect 300hp (221kw) 427nm
Model year(s) 2010

Live ECU tuning for the Mercury Marine 350 Mag 5.7L Mpi V8, with measured power and torque gains, a dyno preview, and the supported file options grouped into one focused page.

Stock Tuned Gain
Power (HP) 300 310 +10 (+3%)
Torque (Nm) 427 450 +23 (+5%)

Available tuning options

Performance 3

Marine Tune commercial engine

Outboard tune 175 hp and under

Outboard tune 176 hp and over

Services, files & hardware 1

Send us your ECU Includes standard bench fee processing for 1 ECU and NZ return freight. Include a send in ECU form fully filled out with your ECU.

Dyno chart

Original HP Tuned HP

* This chart should be considered a visual representation only, actual values will vary.

Installation and process

Choose the tuning package that fits your goals, confirm the vehicle and ECU, and request your files. AltTune then guides the read, write, and verification steps for your selected vehicle — whether handled remotely with a supported flash tool or on the bench.

Support, safety, and trust

Vehicle condition, maintenance history, fuel quality, and intended use all affect results. We only publish gains we can support for the listed configuration, and we ask that you confirm suitability for your vehicle and application before ordering.

Frequently asked questions

01 Is the Mercury Marine 350 Mag 5.7L Mpi V8 2010 - > supported?

This page is generated for an active vehicle in the AltTune catalogue, so it represents a currently supported tuning entry. If your exact ECU differs, contact us to confirm before ordering.

02 What options are available for this vehicle?

The resolved options for this vehicle include Send us your ECU, Marine Tune commercial engine, Outboard tune 175 hp and under, Outboard tune 176 hp and over. The exact list depends on the vehicle type, fuel, and supported protocols.

03 What gains can I expect?

This vehicle shows gains of up to +10 HP and +23 Nm over the factory figures. Real-world results vary with condition and fuel.