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Superior Performance

Performance is our passion and we work to get more out of your engine. Optimise your diesel engine with outstanding torque and BHP. Average fuel savings of 12%

Adjustable Tuning

The Tunit Standard installed by you or through our dealer network. Adjustable 0-9 to your needs to bespoke tune through our dealer network.

Go Eco

Every driver and every car is different. Choose a setting 0-9, higher or lower to improve economy.


Peter,Peugeot 407 2.2 HDI

I bought a Tunit unit for my 2.2l Peugeot 407SW and had it fitted and tweaked by Engine Tuners in Plymouth (and what a helpful, enthusiastic and friendly bunch they are!) Over my first 500 miles of motoring, 300 mixed and 200 towing a 1.5t caravan my computer tells me I'm getting 39.8mpg. Previous consumption without towing was 42mpg at best so I'm pretty pleased with the result. As for the improvement in power and torque, quite frankly I'm not so young as I was and I find it quite scary!

Thanks guys.

Best wishes

John,Rover 75

Runs a lot smoother more power well worth the money