In addition to building in flexibility for ailing sensors, manufacturers are also forced to consider other wear items either from lack of service or neglect. Knowing this, manufacturers err on the conservative side to help avoid emission/warranty issues by building in a margin of error. As these sensors age they will often degrade and the reading sent to the ECU will vary slightly. To meet required standards, a significant margin for error is built into the calibration, which leaves power on the table.Įngine sensors are built to read within certain tolerances. A manufacturer cannot risk their reputation or their bottom line if they sell a car that has difficulty passing post-sale emission testing. In the US, the EPA requires manufacturers to cover specified major emission control components for the first 8 years or 80,000 miles. A single vehicle model will sell 100,000+ units worldwide and each unit must meet varying countries’ emission standards. These standards are very restrictive in nature power output is greatly affected as a result. The processors’ performance is measured in megahertz allowing performance in millions of calculations per second.Īll of these advances in performance and fuel mileage are running concurrently with stringent manufacturer emissions standards. Modern ECU’s contain new powerful processors.

One of the rapidly evolving components is the Engine Control Unit (ECU). The combination of new technology and better components, such as, variable valve timing, Valvetronic, and forced induction result in better performance and increased fuel mileage as compared to the same displacement engines only a few years ago. Modern engines have come a great distance in a very short amount of time. HOW WOULD YOUR BMW BENEFIT FROM AN EPIC MOTORSPORTS PERFORMANCE CALIBRATION?

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