Modern fuel injected engines are controlled by a sophisticated engine computer (ECU). The job of the ECU is to take in information from the driver and the environment, crunch the numbers, and calculate the load placed on the engine. This load information is sent to the fuel injectors in the form of a pulse width (length of time the fuel injector is held open) and a frequency (how often the fuel injector is opened). The PowerCard's sophisticated microprocessor and proprietary algorithms are able to decipher the ECU's fuel injector output signal's information, back-calculating the load in order to determine how much fuel to add and when to add it in order to get maximum performance from your modifications.

Load based fueling is superior to the traditional Throttle Position and RPM (Alpha-N) based tuning systems, because different gears place different loads on the engine and these Alpha-N systems cannot tell the difference between first or fifth gear. The PowerCard can tell the difference.

The air-fuel ratio graph below shows a second and fourth gear roll-on of a fully warmed-up stock Harley-Davidson V-rod Motorcycle. With a Porsche Engineered engine, this motorcycle is representative of any modern fuel injected engine, whether in a car or a bike.

This chart shows that both the horsepower and air-fuel ratios are different with different loads. Our competition would hope that you don't know or understand this. Because they have Throttle Position and RPM based technology. These runs, both made with 100% throttle and both moving through the same RPM range, show that although the Throttle Position and RPMs are identical, the load is not. Due to the obvious limitations of throttle position and RPM based mapping, they can optimize either second or fourth gear, but not both. You are forever compromising, trying to get the best of both worlds. But as you can see, due to torque multiplication, there is a different load placed on the engine in 2nd and 4th gears.

Notice how flat the above air-fuel ratio graph is. The PowerCard understands that the bike has different fuel needs in different gears, and the load sensing technology within the PowerCard enables it to add the proper amount of fuel to both second and fourth gears, optimizing your fuel delivery curve