Tips and Useful Information

Welcome to our Tips Page. From time to time, we will add useful information here. All sorts of subjects relating to engine remapping and motoring in general may be posted here.

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“Birmingham’s clean air zone “




“new road tax rules for 2017/18 and their implications for new cars”


“why do we drive on the left in the UK? “


“Removal of the DPF and its implications for diesel vehicle drivers “


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“All about what’s Watt!”



Better MPG For Free. Part 1

Many of our customers come to us to remap their vehicles to achieve better fuel consumption. But here are a few tips to improve your mpg for free!

  • Check you tyre pressures regularly – If your tyres are 10psi below what they should be, MPG could drop by 5%. e.g. 40MPG down to 38MPG. And your tyres will wear quickly and handling and cornering will be worse.
  • Lose weight. On your car, that is. Don’t carry things in the boot that you don’t need. Consider keeping the fuel tank less than full if convenient (a full tank of fuel can weigh 6 stone or more)
  • Get regularly serviced. Regular servicing can keep you car efficient as well as safe and reliable.
  • Remove racks which aren’t being used. Air resistance becomes a massive force at speed. Anything that increases this, like a roof rack or box, will knock you fuel consumption right down.
  • Air conditioning – Tricky! Below about 45mph, it is probably more efficient to switch your air-con off and open the windows, but at higher speeds, the negative effect of open windows has a bigger drag on the vehicle (especially if its an aerodynamic vehicle) so close the windows and use air-con instead. However, older vehicles with less efficient air-con, and/or less aerodynamic vehicles might be more efficient with air-con off and windows open, whatever the speed.
Watch out for part 2, where we’ll give you a few more tips to reduce your fuel costs. Happy motoring

Why You Shouldn’t Remap Your Car!

We’ve been to a number of vehicles recently where we have advised the customer NOT to proceed with the remap on their car or van. So why would we do that? Why would we drive to a customer, spend some time with them and their vehicle, advise them NOT to go ahead with the remap and then come away without taking a penny from them?

Well, the whole point of remapping a vehicle is to make it more economical, to make it perform better, and to give a better driving experience altogether. To achieve this, it is important to ensure that the vehicle is operating correctly and with no faults in the first place.
Whilst we cannot necessarily identify all faults that may be present, we will always carry out a full fault code reading and will check the general running and service condition of the engine before remapping.

If a vehicle has a fault, a remap will often highlight the symptoms of that fault, so it is much better to get any faults rectified first and then get the vehicle remapped afterwards. We will avoid remapping a car which has a fault on it* as we do not believe that would be in the customer’s interest. We see the initial diagnosis as a crucial part of the whole remapping process.

*Of course, if the remap includes EGR or DPF solutions, these are faults which are dealt with within the remapping process.

Better MPG For Free. Part 2

Following on from the earlier part 1 post, here are a few more tips to improve your mpg for free!

  • Anticipate the traffic flow ahead – slow down naturally before you need to break. Hold back so you can maintain a steady speed rather than accelerating and then breaking, both of which use more fuel.
  • In stop start traffic queues, using the principle from above and a s an example, rather than surging forward at 10mph for 5 seconds and then stopping for 5 seconds, see if you can maintain a steady 5mph without having to stop so much.
  • Shift up through the gears sooner, maintaining a lower engine speed. However, don’t change up so early that you need to apply nearly full accelerator to progress.
  • Switch off the engine if you expect to be stopped for more than 20 seconds. Start/stop technology does this for you automatically, except it cannot anticipate how long you’re going to be stopped for which can be quite irritating!
  • If you have cruise control, it can improve efficiency by maintaining a steady cruising speed. However, efficiency is lost when climbing steep hills as it tries to maintain the same speed.

How to keep your DPF clean and trouble free

Here are our 4 top tips…

DPF regenerations can only happen when road speed, engine RPM and engine temperature are above a certain minimum. Without these conditions, DPF regeneration will not take place. If you do a lot of tow driving, try and mix in some faster and less congested roads to maximise the chance of a regeneration.
Check your owner’s manual or ask the dealer how fast you need to drive, for how long and at what RPM to allow a regeneration cycle to complete.

Try to use the oil recommended by the manufacturer. Always check what grade of oil is needed, (e.g. SAE 5W50, etc) and you should specifically use low SAPS oil which is low in Sulphated Ash. This is a by-product of diesel combustion can block the DPF.

The EGR valve is important for the correct operation of the DPF. They can become stuck and this can lead to problems with the DPF. Check it’s clean and opening and closing freely.

OK, you’ve got the car you’ve got but when you next change it, consider if you tend to do lots of short journeys or spend a lot of time on stop start driving. A diesel car might not be the best choice for you. If you’re concerned about getting good MPG then some of the modern direct injection petrol engines have drastically closed the fuel economy gap between petrol and diesel engines.

What our clients have to say

Nissan X-Trail

"Hi Jeremy, just thought I would write to say how pleased we are with the remap of our x-trail. We had the remap done for better performance when towing and it’s done the job brilliantly. Towed the caravan today and on the hills, where earlier we would have had to change down gears to get enough power to climb up. It sailed up in 6th and still wanted to accelerate. Also, we noticed a difference in economy. Before the remap, the miles to empty would drop dramatically but we gained some miles today. There is also a noticeable difference without the van on the back. Thanks for a great job and will be recommending you to others." - Beckie, Willenhall

Mini Cooper S

"Thanks for sorting the mini out for me. Highly recommend Halesowen Engine Remapping to anyone. Great service, especially coming out to my house. Much better for me. Thanks again." - Darren, Birmingham

Mercedes 5 tonne Sprinter

"This remap has made such a difference! Brilliant service. Very smooth and feels like I'm driving an empty van. Superb result!" - Andy, Enfleet

Jaguar XF-R

"Many thanks for your work on Friday. I am delighted to say that power delivery is smoother and engine note on acceleration has a nicer "growl" to it. In addition, on the cruise home, I set the cruise control to the same speed that I came up at and got just under 2 mpg more! I will sing your praises to others." - Martin, Cardiff

Range Rover Evoque

"The remap carried out via Halesowen Engine Remap has totally transformed my Range Rover Evoque Si4 Dynamic Lux. When I first purchased the car, it had good power, but I always felt I could do with more. But wow! What a difference you have made to my car. It now accelerates like a scolded cat. It is brilliant around town, fantastic on country lanes and fabulous on the motorway. It is also more relaxed due to the added power. Unquestionably a great investment. You have made an excellent car into a truly fabulous car. Can't quite believe it. Many thanks." - Nick, Staffordshire

Subaru STI

"Had my Subaru done on Friday. Great result, good job. Would recommend to everyone. Thanks." - John, Kidderminster