The maps in the ECU cannot be compared with the maps in a fuel adjusting unit like a Power Commander. They do not do the same thing.
The map in the ECU is meant to work alone to determine how much fuel is injected per engine power stroke, and will always increase the fuel metered with increasing RPM and increasing throttle opening. The numbers to the right of the chart are always larger and <somewhat> linear; at 50% throttle opening and 5,000 RPM there will be <around> twice the injector on time as there is at 50% throttle and 2,500 RPM (not really linear but tending towards that way).
A P.C. map adds or subtracts injector on time from the original ECU's generated on time. The P.C. map has no general direction or tendency as each cell stands alone and has no reference to any other cell; the cell at 50% throttle opening and 5,000 RPM may be -10 (reducing the fuel supplied by the ECU by 10%) while the cell at 50% throttle opening and 2,500 RPM may be +15. That does NOT mean there is more fuel supplied at 2,500 RPM; what it does mean is that the P.C. is slightly enriching what the ECU is calling for at 2,500 RPM and slightly leaning what the ECU is calling for at 5,000 RPM.
A P.C. map only works in conjunction with the ECU's map while the ECU's map can and usually is used alone (as all bikes without a P.C. are used).
Brian
Does anyone have the stock map so that we can compare?
