Remapping: Frequently Asked Questions

Below are the most common questions our customers ask. For anything else, please contact us.

Do you offer a mobile service?

Whilst we invite all customers to visit our workshop we do offer mobile installation where possible. Generally speaking OBDII Engine and Gearbox remaps can be performed mobile. Please contact us to discuss your particular requirements and we will be happy to advise of the options available.

How long does it take to tune my car?

Most services can be carried out in between 1 and 3 hours depending on your requirements. Certain specialist services, or custom development work, can take longer.

Will re-mapping invalidate my cars warranty?

The short answer is no! All codes and diagnostics that a dealer may read will remain exactly the same. We say it with confidence because of the rigorous testing regime all remap files go through, and we even give a 24 month software warranty to you. In addition to this, it is illegal for a vehicle manufacturer to void your warranty because work has been carried out by a third party under the EU block exemption laws. This also covers vehicle tuning and engine remapping as long as the failure is not as a direct cause of the remap. We can also say with confidence no JR tuning remap has ever caused a failure and we are recognised as supplying some of the best ECU and TCU tuning files in the world. We develop and supply software to a wide range of tuning companies who participate in our dealer network.

Can the car be put back to standard?

Of course it can and we offer this service free of charge if the vehicle is brought back to us. We'll be very surprised if that's what you want after taking control of your vehicle's performance, however in the case of lease cars some customers prefer to put the car back to standard before returning the car. Should you lose your tuning files due to dealer actions or parts failure we will be happy to re-install the map onto your car free of charge for as long as you own the vehicle. Of course if you've purchased one of our ByteFLASH handheld programmers, you can switch between modified and standard software yourself at the push of a button.

Should I tell my insurance company?

Whilst the upgrade is undetectable to dealer equipment, the responsible answer to this question has to be yes, your insurance company should be notified. However, many insurance companies do not penalise you for upgrades of this nature, particularly if you're tuning for increased economy. Adrian Flux is one such company.

Will my fuel consumption go up after an upgrade?

No, in fact quite the opposite. Even on a performance tune, if you continue to drive the car in the same way as you did before the upgrade, your fuel consumption will probably improve. Of course if you have a track or race map installed on the car and you are driving the car under the conditions with which a motorsport map is intended you're likely to find a slightly reduced mpg figure.

Economy Engine ECU tuning can have a dramatic effect on fuel consumption, with considerable improvements being achieved along with huge money savings on fuel. When combined with economy gearbox TCU software, the fuel savings can be as great as 25% on some vehicles.

Will the life span of my engine be reduced?

A well developed remap will not reduce the life of your engine. All of our software is designed to work safely on a standard car and with standard manufacturers service intervals. Of course we do see a lot of cheap and/or badly developed remapping software in the market, which can and does cause damage to cars, but as a business we strive to compete on quality over pricing.

We take great care to ensure that all of our modifications have no detrimental effect on your car. In a lot of cases the economy tune actually helps to extend the life of components such as the clutch and gearbox by making the delivery of the power far less aggressive and smoothing the overall drive of the vehicle.

In addition to this, increased clutch pressure through remapping Single or Twin Clutch automatic transmissions offers less clutch slip and improved clutch pack life as a result.

Are plug and play re-maps and files sold online any good?

There are a number of basic power upgrades available in a plug and play format or are downloadable from the web. Whilst some of these items can offer increases in power, they operate by merely adjusting a specified signal within the ECU by a set tolerance. For example, some are simply a resister in a box fooling your car into thinking its cold, and thus running rich. It's impossible to compare these inferior upgrades with a properly developed re-map which measures and adjusts hundreds of signals and data files within the ECU to provide a driver experience which is better than manufacturer software.

Running an engine without the correct air fuel ratio or fuel pressure too high can cause serious damage and as a result we advise that these generic files and unsupported devices for sale on the web should be avoided at all cost. We've seen too many customers come to us after a bad experience. We're always happy to advise on your tuning needs.

Contact Us

Tel: +44 (0)1795 342006
Email:info@jrtuning.co.uk