What Do You Mean? ECU Remapping What’s That?
Twenty to thirty years ago most engine tuning experts were using very fine feeler gauges and spanners to adjust the tappets with small screwdrivers to adjust the carburettor often tuning by ear.
I am sure you will agree this would not be the most scientific manner of getting the car to perform at its very best in terms of performance and/or the fuel economy. It was a long and tiresome process to get it right. However, it was necessary to do it to “finely tune” for maximum performance or fuel economy ratios.
Too many car mechanics however just accepted a rough estimate of what was right and were not as sensitive as they should be with the feeler gauge. But for most customers that was as good engine tuning as they were ever going to get as part of the regular car servicing work.
Improving the performance of the engine.
Engine technology really started to change fast in the mid to late nineteen sixties.
- The use of individual valve tappets faded away being replaced by automatically self adjusting hydraulic tappets.
- Hydraulic tappets were then replaced by overhead camshaft engines with rockers.
- The use of catalytic converters to control the exhaust emissions.
- Single Carburettors were also being replaced twin carbs.
- then changed over to fuel injection units.
These factors alone were major steps forward in improving performance.
However, the biggest step was the development of computerised engine control units (ECUs). These ECU boxes are now part of almost all modern petrol and diesel engines fitted into cars, vans and motorbikes on the road today.
Car manufacturers will provide a wide range of settings controlled by the ECU. However, they are not the optimal settings for your car and the way you use it. Scott Cheyne of Croft Autotech Ltd is fully trained to help you get the best out of your car through ECU remapping.
Published by Scott Cheyne