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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 **
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.