Tunit Performance Tuning has been delivering vehicle Engine Tuning, Diesel Tuning and Petrol Tuning for high performance and economy since 1998. Founded in Chorley, Lancashire Tunit have manufactured and distributed worldwide considerably longer than most car remapping or car chipping companies. Engine Tuning, Diesel Tuning and Petrol Tuning is not just restricted to cars. 4x4`s, Commercial vehicles, motorhomes, tractors and boats all benefit from Tunit.

Tunit was introduced as an improved method over engine chipping and engine remapping. It is also different to a regular Tuning Box.  A chip or map method is invasive to the vehicles engine management system. It removes the cars original software and is difficult to reverse or change if the result is not desirable. The Tunit is everything a Map or Chip cannot be. It is adjustable, removable and does not interfere with your vehicles original equipment. It leaves the engines safety parameters in place.

The software files on each Tunit have been developed under road and simulated road conditions. Using our 1000 BHP dynamometer (or Dyno rolling road). Maximum performance and economy are achieved without removing the manufacturer's safety measures. 

Tunit is not just a great product but it is a great company. Our longevity in the industry is a testimonial to our success. We provide long-term care for as long as you own a Tunit. We help you performance enhance and save fuel when you purchase your next car all for less with our part exchange and upgrade programs. We even have warranties that protect your engine for your peace of mind.

Once a customer, we look after you in other ways. We provide award-winning after sales support through our National and Local Tuning dealer Network. Whether you or your business want speed, economy, acceleration, pulling power or a combination, the Tunit range of products are flexible enough to accommodate and adapt to each and every vehicle. If you have a change of use of the vehicle we can adapt the Tunit to suit you more.

All Tunit products are adjustable unlike car mapping or car chipping. Each Tunit product has a user-friendly adjustment either by an external manual adjustment or smartphone. Additional custom tuning, upgrades and part exchanges can be carried out by any Tunit dealer. 

If you are looking at Tuning any engine or vehicle Tunit covers over 10,000 various vehicles and engines worldwide. Our experience is extensive and we will always provide you help and advice to achieve performance, economy or both. Tunit has been established since 1998 .