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Tuning Boxes

The diesel tuning box fits between the fuel injection system and the car's ECU (engine control unit), it controls the air/fuel mixture, ignition timing and for turbo cars, the boost pressure. All vehicles manufactured since 1999 have an ECU.

Our diesel tuning boxes are designed and manufactured in the UK.

Why use our boxes?

A lot of diesel tuning boxes use variable resistors to modify the engine's performance and consequently they offer poor results. Our tuning boxes use a high speed microprocessor chip to deliver the best performance possible.

Each of our tuning boxes is programmed for a specific vehicle model, so that the best gains can be made for power, torque and fuel economy. A lot of other companies use generic tuning boxes.

You may have heard about engine remapping as an alternative to using a tuning box. For more information please click here

Why use a tuning box?

The ECU stores the vehicle manufacturer's settings and these settings are of a fixed value. The reason for this is to comply with emission targets, varying tolerances in the engine build and to allow for the possibility that the owner of the vehicle may not have the vehicle regularly serviced. Also, by setting an engine to a fixed value, it allows the manufacturers to produce several different variations from a single engine design. A manufacturer may release a vehicle with a 'new' engine, when in fact it is the same as a previous model but with the settings adjusted in the ECU. Car manufacturers often develop an engine where they plan to incrementally increase the power and performance over its life cycle. The capacity for more performance is built into the engine from day one.

What will I gain by fitting a tuning box?

By using one of our tuning boxes, you are able to increase the power and torque (pulling power) often by as much as 30% or more, but stay within safe limits so that your engine will not be harmed in any way. Your car will also feel lighter to drive and have smoother, more progressive acceleration. In the majority of cases, with turbo cars, lag is eliminated and the engine is more responsive to the throttle position, this makes driving more of a pleasure.

Another advantage of having increased torque is that there are less gear changes to be made. When you slow down you do not need to change down to a lower gear, the car will be to accelerate away from the higher gear. Because there are less gear changes and a lower rpm to speed ratio, fuel consumption can be up to 15% less.

If you wish to know what the increased power, torque and mpg is for your particular vehicle, then please contact us by clicking here.

How does a tuning box work?

With a diesel engine it is only air that is drawn into the cylinder, which is then compressed and reaches a very high temperature. When the piston is reaching the end of its cycle, diesel is injected into the chamber which ignites due to the high temperature of the air. The combustion that takes place pushes the piston down and there is still air left in the cylinder after this process, sometimes as much as 50%.

When extra diesel is injected into the chamber and combined with the air remaining, more power and torque are created. By allowing the optimum amount of fuel to in injected into each cylinder, the engine runs more efficiently and in the majority of cases, fuel economy is improved. This improvement in fuel economy is due to the fact that you do not need to use as much throttle to drive your car, due to the increased power and torque.

Save Fuel

To further your fuel saving, the AA are providing a Drive Smart course. By applying the driving techniques that you learn from the course, you can achieve fuel savings of 10%. They used to offer a free course, but because of the demand, they are now charging £60.00 at the time of writing. Drive Smart.

Having 'Eco' tyres fitted to your car can save 6% on your fuel bill. More information about these tyres can be found in
Which? magazine.

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