This depends mainly on how you drive. If, after tuning, you use the additional power only when you need it, the improved torque will reduce your average fuel consumption by a few per cent. However, if you use the extra power regularly to increase your acceleration rates, you will use significantly more fuel. Under stable highway cruise conditions, you may see up to a 20% improvement in fuel economy.
Not all cars can be remapped. Older models – typically those manufactured pre-2000 – may need their chips physically modified (which involves removal and soldering) rather than a simple software update or remap.
The cars most commonly remapped tend to be those with turbo diesel engines. These models will see the most significant improvement for relatively little cost. You’re best off calling a specialist and asking what the benefits are for your particular make and model.
The remap will increase the power output of your vehicle, and depending on how you drive depends on how reliable it is for you. If you go at it harder than usual, you can expect to decrease the life of your engine but likewise if you thrashed it without even having it mapped then you would expect this to be the case anyway. The remap does not stress the engine, so the remap itself does not affect the longevity, only your driving style. We have remapped modern engines with over 200,000 miles without issue, so it is doubtful that you will get problems.
Tell your insurance provider if your car engine has been remapped. In-car insurance terms, remapping or chipping is considered a car modification, even if it’s one you can’t see. If you don’t inform your insurance provider, it could invalidate your policy.
Car engine remapping could mean an increase in your car insurance premium cost. And, even though remapping is increasingly common, some insurance providers won’t cover your car if it’s been chipped.
There are stories of remapped cars flunking their MOT because they failed the emissions test. But as long as your remap is carried out by a reputable firm such as Essex Tuning, this shouldn’t be an issue.
Existing modifications can sometimes bring good benefits to enhancing the software so let us know in advance.
There is great confusion about custom and generic files. Some of our competitors use the word “custom” to describe what they offer without actually knowing what it means… so here are the definitions:
A generic file has a tried and tested calibration created by a file writer who understands the ECU strategy. There is no need to change it, and it will have been successfully applied to thousands of vehicles with the same ECU. Should we receive a new original from an ECU of the same type, running the same strategy, the modification we apply is still deemed as a generic file.
A custom file is NOT created by changing the modifications of a generic file; instead, it is a conversion carried out with the car on a dyno, being mapped precisely to the customer’s instructions and based on hardware changes that require a different level of tune. Therefore, anyone who offers “custom tuning files” without a dyno is misrepresenting the term and should be avoided.