T-Tec Tuning Box

The T-Tec range of tuning boxes offer superb performance improvements, completely transforming the driveability of your car.

Our ethos of Powerful, Simple and Safe runs through all the products we offer, and these tuning boxes are no exception.

A tuning box works by adjusting certain sensor signals to effectively force your ECU to remap itself. It sees new readings and adapts the performance output of the engine accordingly. The advantage of this over a traditional ECU remap is that all adjustments remain within the factory set safety parameters.

(33 customer reviews)



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Your Engine Dances to our Tune

With the T-Tec tuning box installed, it will be running more efficiently than it ever did before. Bringing the power in earlier down the rev range and smoothing out performance spikes that cause an erratic driving experience.

On most vehicles, fitting can be done in 15 minutes without the need for any specialist tools. We also offer a [fitting service] if you prefer.

Mobile App Controlled

Whilst our tuning boxes work wonders as a fit and forget product, you also have the option to have it mobile app enabled. This means once fitted, you can control it directly from your smartphone.

You can switch between different tuning maps for different conditions and even switch it off if needed (e.g. in icy or very wet conditions where you actually want less power driving the wheels).

More Power, Less Fuel

For those that use the power, especially if you have a heavy load, towing a caravan or simply a fairly heavy right foot, you will also see an increase of up to 20% in fuel economy!

5 Year Warranty

All our tuning boxes come with a 5 year warranty as standard. This means any component failure within 5 years of your order date will be replaced or repaired at no cost to you.

Transferable Technology

Unlike an ECU remap, if you change your car you can take your tuning box with you. All you may need is a [change of harness] and/or a [new map].

If you are an ultra cautious driver trying to save every drop of fuel where you can and never putting down the power unless you absolutely need to, this tuning box is not for you. You will not experience the benefits and not see much, if any, MPG increase.

33 reviews for T-Tec Tuning Box

  • Nigel Rowles

    After 8000 miles of varied driving and different settings the fuel consumption has gone down by 30-50miles per tank of fuel. the only upside to this product is the increase in overtaking ability.

  • Stephen Moore

    although the common rail was a little hard to get to on my car once there this product just clips on in seconds, once you have had a few road runs adjusting the settings one at a time which is the best way to do it your done. At first you think nothing has changed but if you turn the device off you can tell the difference,my fuel usage has got better although as normal if you keep flooring the throttle the usage drops

  • Frank Thomas

    Fitted to a W204 Mercedes 200cdi. Initially had a problem traced to a faulty cable. Helpline was very good and new cable was received next day. The box has made the car much nicer to drive – smooth and much faster/torquey (still on 5). It always felt underpowered before especially on long hills etc but it now flies up them! Haven’t done a real fuel check yet but have seen 50+ mpg on the computer – it’s definitely not really doing that much but I do expect some improvement as it now needs a lot less throttle to build and maintain speed.
    Now i’ve got used to the performance the csr feels horrible with the box switched off! So far, after 3 weeks use, I’m very pleased – hope that there wont be any longer-term problems.

  • Peter Leeke

    It does exactly what it says it should. Power and response greatly improved. Fuel economy has gone from the initial 51 to about 63 and 74 when cruising on the motorways. Very happy with it.