Why does the Programmable System work better?
Easy, the stock systems that utilize MAF (mass air flow) devices measure airflow into the engine and proportion fuel to the engine based on a preset air fuel ratio for economy. Unfortunately the MAF sensor was never designed to read the airflows above the cruise and part throttle operation. Now the computer must calculate fuel from a factory table based on RPM and calculated load. The programmable systems allow you to program every engine RPM and Load point. Fuel and Spark are controlled by changing the Fuel and Spark “Maps” based on feedback and performance. Feedback can be in the form of a engine or chassis dyno, wide band oxygen sensor or even a standard O2 sensor. The most important feature is that the unit is Re-Programmable and when you decide to change cams because you find a better one, you have nothing else to buy. Install the new cam and the computer can be reprogrammed for the additional HP of the new cam at no additional cost other than time.
