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Marine Diesel Tuning Boxes

When you are out on the water, torque is the key to your boat’s performance.

It is what lets you get up and stay on the plane quicker, pull skiers out of the water more easily and enables you to carry more passengers without reducing your cruising and top speed. If you are finding that your current engine is struggling to give you the performance you need, don’t consider selling your boat just yet. A TDI Tuning marine diesel tuning box offers both increases in performance and economy.

Our tuning boxes are pre-programmed to deliver optimum performance for all diesel marine engines and because they are a simple plug in fit, you can install it within minutes and be out on the water enjoying the benefits which are up to 40% more torque and power and up to 20% improvements in fuel efficiency.

Diesel marine engines

For many decades, petrol has dominated the power and leisure boat market due to; the extra performance it offered over the diesel alternatives that were available; the relatively low cost of petrol.


The popularity of diesel powered ribs, speedboats and fast cruisers has grown in recent years mainly due to the introduction of compact and powerful turbo diesel inboard engines from a variety of manufacturers which are also much more economical than similar powered petrol outboards and inboard engines.

Inboard marinised TDI engines from manufacturers such as Cummins, Volvo Penta and Yanmar can all be fitted with our tuning boxes. Our experience with tuning engines from the VAG group enables us to offer tuning options for the range of marinised VAG engines that Mercruiser distributes for them ranging from their 1.9 tdi to the 3.0 and 4.2.


Below you'll see a link of the Marine engine manufacturers we support. Please click on the logo relevant to your type of marine engine. If you're not sure which engine type you have please call or email us and we'll be glad to assist you.