ECU Remapping Facts

REMAPPING GUIDE, Quantum Tuning.ECU Remapping

ECU Remapping Facts – West Midlands – Reflections Detailing Ltd


  • A reputable remapping company will return your car to standard without charge, at the time of the remap, if you are not happy with the results.
  • A reputable remapping business will keep your original calibration – and restore it if you are not completely happy.
  • An investment of many thousands of pounds is required for the correct equipment. Many people offering remapping use a £5 CD available on the internet.
  • It takes years of training and experience to correctly re-tune a car. Our technicians have to keep abreast of modifications to all makes and models.
  • Having your car remapped by an amateur or someone who is not sufficiently qualified and/or does not have the right equipment may DECREASE performance and INCREASE fuel usage as well as damaging the configuration of your engine.


In our free remapping guide, we go through the things to consider before purchasing a remap. Having been in the business of recalibrating O.E. Engine management systems for over 8 years, we have been watching the market change with a mixture of disappointment and dismay. It is an unfortunate fact of life now that there are many products on the market that give anyone with a little computer knowledge access to the engine run calibration stored within a vehicle’s ECU.

This was always going to happen as all manufacturers, now allow ECU recalibrating via computer so that faults can be ironed out at main-dealer level and options can be added to the car without factory intervention.

The problem is, you can easily go online and buy yourself a relatively cheap tuning and remapping programmer that will both read and write the file in your engine management system, which means if you had the means and know how to edit it, you could alter the way the engine runs. This is where the problems have started to arise as not only can you buy the hardware, you can also buy files on a CD that claim to offer the same as the professionals do. These CD’s often have some 10,000 modified ECU’s files on them, and all for only £4. Does that sound like a professional has made them to you?

Generally speaking, these files have been stolen from one or another company over the years and been compiled onto CD/DVD. Are the files good? Nobody knows… will they kill your engine? Well, we sure won’t be finding out as we wouldn’t dare use one on your expensive engine, but sadly lots of these people have done just that and the manufacturers are selling ECU’s, engines and transmissions like hot cakes as a result!

We feel it was worth writing this page to make you aware that the reason for the sudden drop in market price of this product is owing to the number of companies that have suddenly popped up, claiming to be experts at remapping engine management systems! It is usually quite easy to spot them – just start asking some searching questions about how the maps work and you will soon find out if you are talking to a man who knows a little bit about computers, or if you are talking to an industry professional. The former will change the file in your ECU for one found on a CD purchased online. An industry professional will calibrate the file for your particular car and as a result can tweak it to perfection, ensuring all security and chassis coding is retained.

Some so-called “calibrators” couldn’t even tell you the correct AFR for full load use, let alone how a torque limiting map actually works and why you should just maximise all values within it… why these people think it’s acceptable to just increase calibration tables to max without knowing what they do just because they read it on the internet is anyone’s guess, but every industry is the same really if people can make an easy buck, they will and its always at the end users cost.

At the end of the day, this is a high technology industry that requires constant re-investment in tooling and skills due to the sheer pace of the technology utilised on modern vehicles. Anyone diesel tuning or remapping at O. E. level as we are needs to be constantly retraining and have access to the best tooling and software that money can buy, and it cannot be bought with mere thousands, you need to invest tens and ultimately hundreds of thousands.


5 years ago your average car like a Sierra Cosworth had just 40 tables of interest to calibrators and around 50 calibration switch points for equipment and parameter coding. Today, even your average family diesel has in excess of 1000 calibration tables and tens of thousands of data switch points. How do these fly by nights know which tables need changing, and by how much? How do they know what the tables do and what the effect will be? Will the increased boost cause turbo problems? Excessive EGT’s? Premature head gasket failure? Will the increased rail pressure cause problems with the injectors? (Especially on Ford TDCI’s) The Pumps? The lines? We have seen ruptured fuel lines here caused by some idiot raising a common rail pressure by an extra 100bar because he thought it was an extra 1.00 bar of boost. Incredible!

When a professional does the work he will start with your OWN original file and modify a carbon copy of that one so that all immobiliser and chassis information is retained, as well as any updates you have had installed from the factory such as personality settings and bug fixes etc… you end up with your own file, tweaked for more power/economy etc and access to your unaltered original calibration back at any time should you need it and that is the ONLY way vehicles should be tuned.

The cheap remapping file fitters normally install files from release date cars with the immobiliser software removed and of course, no factory bug fixes so they can quickly and easily flash the same file into hundreds of cars. At best you get a car with more power and a lot of bugs, or at worst one with an immobilised ECU that nobody can access or even one that does run but a thief can take from you in under 10 seconds.


Text courtesy of Quantum Tuning

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Referral Rewards

We love our customers, without them, we would be nothing, literally! A lot of our business comes from referrals from existing customers and we thought it as about time we rewarded people for spreading the word about our brilliant services.

A lot of our business comes from referrals from existing customers and we thought it as about time we rewarded people for spreading the word about our brilliant services. With that in mind, we have created our unique, Referral Reward Scheme.

All customers who have used us in the past, or do so in future, will qualify to participate in the scheme which offers individual rewards of up to £40 with no cap on the number of referrals that can be made. The more people you refer, the more will use Reflections Detailing and the more you will earn! It’s that simple.

Find out more about our Referral Rewards Scheme here, and don’t forget to share!

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Reduce your fleet costs

As a Fleet Manager one of your core KPIs will be to keep the cost of your fleet as low as possible. Your fuel bill is likely to be one of your top 3 biggest costs. Following our fuel saving top tips you could reduce your costs by 10%-20%.


Our Top 10 Fuel Saving Tips

Dramatically improve your MPG by following these fuel saving tips on a daily basis; challenge yourself to constantly improve. You will be amazed at what you can save.

1. Slow Down

One of the best ways to save fuel is to simply reduce your speed.

2. Careful Braking

Every time you brake, you convert fuel that you have paid for into heat!

3. Planning

Plan ahead, watch for traffic; choose the best route, not always the shortest.

4. Use Gravity

On a modern vehicle it uses no fuel when your foot is off the accelerator, so take advantage of downhill runs, or approaching a junction; it’s completely free motoring!

5. Accelerate With Care

Accelerate smoothly and gently, maintain a constant speed and keep gear changes to a minimum.

6. Top Gear

Get into top gear as soon as possible, without labouring the engine as each gear down can cost up to 20% fuel.

7. Switch The Air-con

Off Up to 10% fuel saving

8. Keep It Serviced

Under-inflated tyres are one of the most commonly ignored causes of poor MPG.•A dirty air filter restricts the flow of air into the engine, which harms performance and economy. Use a quality oil.

9. Reduce Weight

Always remove your roof rack or roof box as soon as you are finished with them, the extra drag they cause will have a negative effect on your fuel economy. Only keep things in your car you’re likely to need, having a boot full of junk reduces your fuel economy too.


10. Have a Remap

With a diesel engineed vehicle you can significantly improve fuel consumption by having a remap. But don’t take our word for it, try it for 30-days under our no quibble money-back guarantee.

Save Fuel With A Quantum ReMap™ Don’t believe in outlandish fuel saving claims, these simply won’t happen! Fact is that no one has a miracle cure or gadget to save both your pocket and the planet, BUT when you have a Quantum Green™ Remap you can experience substantial fuel savings and these days, every little really does help. Realistically, most turbo-diesel vehicles can see a 10-15% fuel saving from the remap alone. BUT, when combined with a change in driving style to take full advantage of the extra torque and driveability, then much more is possible.




A company car travelling 30,000 miles pa averaging 50mpg with a fuel cost of £1.15 per litre will spend £3105 on diesel. A modest 10% improvement would save £310.50 per year, almost £1000 over a 3 year lease. Add in the cost of an ECU Remap at £250 and you can see it will pay for itself in the first year.

For an informal chat about how you could reduce your fleet costs please call us free on 0800 0433055 and ask for Richard.


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ECU Remapping

We recently decided to add ECU Remapping to our portfolio of services since it is becoming more popular and widely accepted by insurance companies.

So the exciting news is we are now doing ECU Remaps from our workshop in Cradley Heath supported by a mechanical and electrical breakdown warranty. All maps are custom written to suit your needs and we can focus on economy, power or a bit of both.

If you would like more information call for free on 0800 0433055 and we’ll tell you what we can do for you.

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