nitrous control and many other features. Latest test codes support 4 cyl sequential fuel. Code is licensed for use on genuine B&G products only. Firmware for MS-III chip standard MS-III code This is the default MS3 code that you can load onto your MS-III board. The code has (multiple) 16x16 fuel and spark tables, support for up to V8 sequential fuel and spark, stepper IAC control, 2 or 3 wire PWM idle valve control, fuel control to 1 μs, several user-configurable spare ports, specific features for boost control, water injection, fan control, nitrous control etc., MS-III can control distributors or EDIS ignitions and decode a wide range of OEM toothed crank and cam wheels. Additional features includes enhanced transient enrichment compensation (X-Tau and EAE acceleration enrichment), enhanced closed-loop mixture control with wide band sensor AFR targeting, closed loop idle control, various types of rev-limiting, MAP/MAF/alpha-N fuel control, injector and coil test mode, crank/cam input diagnostics, SDcard datalogging, flex fuel (gasoline/E85) with appropriate sensor, LPG support, and many more. A history of Innovation The MegaSquirt line of ECUs, particularly MegaSquirt-3 and MS3Pro, have commonly found themselves to be innovators in the Engine Management System world. The creative thought and innovative efforts of the developers and the lead distributor (DIYAutoTune) has brought about many advancements, only years later to be copied and imitated by others in the industry. Perhaps the first to implement (in 2010) Real-Time o2 Sensor based fueling corrections on an individual cylinder basis of any aftermarket ECU, this allowed the ECU to treat each cylinder of the engine individually, with the ability to tune the fuel injection system for the precise amount of fuel each cylinder needs to account for different air distribution caused by uneven airflow through the intake manifold and cylinder heads. However going back much further, to the early days of MegaSquirt-2 in 2005, the Output Test Modes feature was implemented allowing all of the ECUs critical outputs, from the fuel injectors, to the ignition coil, fuel pump, idle valve, and more to be 'tested' from the TunerStudio Tuning Software to allow the user to verify their wiring/installation is proper, and to verify individual components of the EFI system are working properly. This diagnostic feature is one of many that set the MegaSquirt line of ECUs apart from all others for over a decade. Alas... others in the market have since begun to imitate these features.