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In some countries emissions targets vary as measured by CO 2, HC, NOx and these usually require a fudging of the one setup for all approach When a manufacturer creates a timing map they build into it a big margin of error to cope with: adverse temperature ranges, minor faults & bad conditions. It is now possible to advance the timing if the throttle is wide open to give greater power or back off the timing when cruising at constant speed for improved economy. ECU MAPPING PROGRAM SOFTWARE(Some manufacturers in the 2016 cheat software scandal have even created code to detect test conditions and run super lean to pass emissions limits.) So what does ECU remapping do?Įlectronic ignition allows the manufacturer to fine tune economy at popular road speeds such as 30mph, 56mph and 70mph where most cars spend a large proportion of their time. With the improvements in Turbo chargers and injector technology a very precise amount of control over fuelling and power output can be achieved. Now air temperature, engine speed, engine load and even control over turbo/wastegate control & fuel delivery rates means that precise management of the engine ignition timing is possible and you can achieve the maximum power output throughout the rev range. You ended up with a perfect spark timing only in a limited RPM band.Ī complete map of variables was entered into the ignition program and the preset timing would be read from a table. The electronic ignition system was born giving much finer control over fuel delivery and spark timing. This did a sufficiently good job, but for the most effective power you would need to vary the timing to a greater degree than a fixed ratio advance curve. It was clunky and mechanical but seemed to work reasonably well. The greater the RPM, the more the timing would advance. These programs can be found at accredited colleges and universities.Back in the good old days, the task of timing the ignition spark was performed by the mechanical distributor. Distance learning degree programs provide education and training in many fields, including accounting, home inspection, medical transcription, business management and criminal justice. Is distance learning accredited?Īccredited Distance Learning Degree Program Overviews. ![]() The ECU has the job of controlling the fuel injection, ignition and ancillaries of the engine using digitally stored equations and numeric tables, rather than by analogue means. ECU MAPPING PROGRAM REGISTRATION
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