![]() ![]() Dyno tuning a PB system is the best method to maximize power while avoiding "Check Engine" codes, poor mileage and erratic drivability. Although the more elaborate PBs require a different tuning strategy, there is always interaction with stock ECU. The more elaborate PBs go so far as to interrupt injectors, ignition, and O2 sensor, offering extreme control of ignition timing and fuel delivery. There may not be much margin in a stock ECU for a simple PB to take advantage of, and/or the stock ECU may aggressively compensate, let's say the A/F Ratio, away from your requirements back to factory tolerances. With a simple PB, by adding, let's say, extra voltage to a map sensor signal, the ECU is "faked" into thinking the engine is making more power, pushing the ECU into that part of the tune. It interrupts (cuts into) one or more signal wires. A PB is used in conjunction with the stock ECU. When flash software, a stand-alone replacement, or a chip tune is not available for your ECU, a Piggyback (PB) system may be an alternative to extract any hidden horsepower and compensate for larger injectors when there is a need to upgrade. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |