What is torque (Nm)?

Torque is part of the basic specification of an engine: the power output of an engine is expressed as its torque multiplied by its rotational speed. Internal-combustion engines produce useful torque only over a limited range of rotational speeds (typically from around 1,000–6,000 rpm for a small car). The varying torque output over that range can be measured with a dynamometer, and shown as a torque curve. The peak of that torque curve usually occurs somewhat below the overall power peak.

Understanding the relationship between torque, power and engine speed is vital in automotive engineering, concerned as it is with transmitting power from the engine through the drive train to the wheels. Typically power is a function of torque and engine speed.

The SI unit for torque is newton meters (Nm). You may sometimes see torque expressed in U.S. customary units, foot pounds (ft·lbf) (also known as 'pound feet'). When this is applied to a car this means the effort exerted on a shaft to move the vehicle along. When torque is great enough to move a shaft through a given distance in a given time this is expressed as power and measured as horsepower. Basically, with more torque available the quicker you can move the wheels from stationary.

What is bhp?

An engine produces power by providing a rotating shaft which can exert a given amount of torque on a load at a given RPM (crankshaft revolutions per minute). The amount of TORQUE the engine can exert usually varies with RPM.

A dynamometer determines the power an engine produces by applying a load for the engine output to drive against thus absorbing power. The dynamometer control system causes the absorber to exactly match the amount of torque the engine is producing at that instant, then measures that TORQUE as well as the RPM of the engine shaft, and from those two measurements, it calculates power.

Can my car be remapped?

We can remap 99% of post-2000 (and some earlier) diesel vehicles, as well as many petrol vehicles. Please check our comprehensive vehicle application list but don’t hesitate to contact us if yours is not listed.

Where is the remap done?

Our workshops are based in Cheltenham, Gloucestershire and you are welcome to come here to have the work done. Our opening times are Monday to Friday, 8:30am to 5:30pm – Saturday appointments are available on request.

We also offer a mobile service in some areas, including Cheltenham, Gloucester, Evesham, Ross-on-Wye, Worcester, Stroud, Cirencester, Swindon. Please contact us for further information.


Can remapping be reversed?

We store all original ECU mapping data on site meaning the vehicle can be returned to standard if required. This process is completed free of charge at our premises in Cheltenham.

Will remapping effect my fuel consumption?

The way you drive the vehicle will effect your fuel consumption – as it would before remapping is completed! If you use all the extra power, all the time, you will naturally see a rise in fuel consumption. We can also remap vehicles with economy in mind.

Will remapping effect my insurance?

We would advise that you inform your insurance company of any modifications made to your vehicle but this is obviously your decision.

Why don’t car manufacturers remap each engine?

There is a simple answer to this question – car manufacturers sell cars all over the world and they need to be able to be reliable and economic in all conditions (ie. one size fits all!). The manufacturer therefore purposefully detunes their engines to cope with poor quality fuel, atmospheric conditions, poor servicing etc. to prevent engine damage caused by these conditions. They also have to cater for the masses, including those to whom power is not of vital importance!

In the UK, we do not suffer from these poor conditions meaning that vehicles can be re-tuned for our power-happy, fuel saving nation! This is where we can help!

Should you have any further questions, please don’t hesitate to contact us.

Locations include: Cheltenham, Gloucester, Bristol, Swindon, Bath, Chippenham, Thornbury, Dursley, Stroud, Witney, Cirencester, Coleford, Ross-on-Wye, Cinderford, Lydney, Hereford, Worcester, Bromsgrove, Kidderminster, Warwick, Evesham, Stratford-Upon-Avon, Great Malvern in Worcestershire, Gloucestershire, Herefordshire, Avon, Oxfordshire, Warwickshire, Monmouthshire,