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The Every Man's 4 Cylinder
At Tampa Marine Tuning, we are excited to offer Outboard EFI's performance tune for 4 cylinder Suzuki outboard engines. With this performance upgrade, your 115 and 140 horsepower engine will increase 10-25 horsepower depending on the model.
- DF115T +25hp
- DF115A +25hp
- DF115B +25hp
- DF140T +10hp
- DF140A +15hp
- DF140B +15hp
The rev limit also increases by 200-300 RPM to help reach higher top speeds and extract as much performance as possible.
NOTE: To achieve optimal performance, your engine must run on minimum
89-90 USA grade / 95-98 AUS/EUR grade octane fuel and adhere to
recommended service intervals. Failure to do so may result in decreased
performance and could potentially damage your engine.
** Multi-engine orders: Free overnight return shipping automatically applied at checkout **
Suzuki Engine Model Identification
The plate number tag is located on the starboard side of the transom mount as portrayed in this photo. Suzuki uses the model to identify several key features of the engine, including power output and production version.
Outboard EFI™ Authorized Dealer
Unlock factory-hidden performance from your Suzuki with ECU tunes by Outboard EFI—specialists in safe, calibrated power. Their flash optimizes fuel and ignition for 89+ octane, eases electronic airflow limits, and taps into the shared hardware many models already have, so you feel stronger mid-range punch, better throttle response, and improved efficiency without a full repower.