The BEST Yanmar 4JH45 & Volvo Penta D3 Upgrade for Boats - More Power, Less Fuel
Ever wish your boat engines had more ponies?
One of the BEST value upgrades on our boat was installing a set of STEINBAUER Power Modules on the Yanmar 4JH45 marine diesel engines. By optimising the tune, these modules give us around 60 horse power per side, while also improving our fuel consumption and leaving no footprint on the ECU.
The module we show emulates the 4JH57 at a lower cost than an engine swap. It is an essential upgrade for a Leopard 45 and Leopard 42 Catamaran, as well as others with the 4JH45 installed.
Currently there are modules for the Yanmar 4JH series and Volvo Penta D3. If you have a different engine reach out to STEINBAUER; they may have already done the development for the engine your boat has!
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WARRANTY IMPLICATIONS VIDEO: https://youtu.be/rvTsRa8kWa8?si=Bjj_BFboWbrVoOU8
@STEINBAUERPerformance - https://www.steinbauer.us/marineengines
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In this video we explain:
• What STEINBAUER PowerModules are
• Benefits of having them installed on your yacht
• How the installation works on a marine diesel
We also take you out on a test drive on another Leopard Catamaran to see the difference in performance when one engine has the STEINBAUER PowerModule tune and the other is left standard.
Relevant to a range of catamaran brands including Vision Yachts, Leopard Catamarans, Maverick Catamarans, Fountaine Pajot, Lagoon Catamarans and Knysna.
For Yanmar 4JH45 owners who were considering upgrading to a Yanmar 4JH57, this is the answer!
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After backpacking Asia, road tripping Europe and doing a bit of van life, we’re now exploring the world aboard our Leopard 45 catamaran.
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0.00 Intro
0:55 How it Works & Benefits
4:35 Installation
8:29 Sea Trial Comparison on Leopard 45 Comparison
#sailing #catamaran #yachtdiy #yachtlife
Travel Sketch
Join the crew of Travel Sketch as they document their 2026 Trinidad mission and structural hull reconstruction aboard their Leopard 45, Liger.
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