![]() How can you offer this at such a low price? We have been tuning sport bikes for 15 years. The Read Only part of that means the chip retains its programming without periodic electronic refreshing loss of electrical power doesn't lead to the chip losing its programming (It's like the CMOS BIOS of a computer). "Flashing" the chip involves electronically erasing the read only program and replacing it with new, updated information (the engine control 'map'). What is ECU Reflashing? ECU stands for "Engine Control Unit." It is the computer that takes information from the various sensors on the engine like crankshaft RPM, manifold pressure and throttle position to determine how much fuel to deliver through the fuel injectors and when to fire the ignition coils. The computer "chip" that is the heart of the ECU is usually an EEPROM - an Electronically Erasable Programmable Read Only Memory chip.
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