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The ECU controls the air/fuel mixture through all demands on the engine.

There are too many slight variations in the air/fuel mixture to count that have to change to keep the optimal performance. A carburetor cannot do that. The ECU uses sensors to determine what demand is on the engine. They are, throttle position, engine load (MAP or MAF), coolant temperature, intake air temperature, barometric pressure, and for fine tuning, oxygen sensors. With all this information, the ECU knows how long to open the fuel injectors for.

We have the Used ECUs you need at the price that is
right for your budget.

Controlling the engine is the most processor-intensive job on your car, and the engine control unit (ECU) is the most powerful computer on most cars. TLF Performance Parts has used Electronic Control Units so that you can be sure to keep a perfect air/fuel ratio for the engine under all operating conditions to maximize efficiency (gas mileage) and power. All of our parts are inspected thoroughly for quality and dependability.