![]() ![]() This resets the sensor calibrations and all input/output to the factory state, giving a common starting point on which to build a map. When the firmware utility asks you "Preserve sensor calibrations, and I/O pin states (y,n, default: y)?" answer "n". Make sure to choose the correct firmware version during install as both MS3 and MS3-Pro firmwares are included in the installer. Follow the instructions on the Megasquirt 3 - Loading Firmware to load the newest release firmware onto the ECU. Now proceed to load the newest firmware for the MS3 / MS3-Pro. Please follow the instructions on the MS3 Serial Connection Setup page to set up your serial port or install the USB drivers if necessary. The free version will suffice for now however you may want to upgrade to the paid version when you start tuning as only the paid version can autotune the VE table.ĭepending on whether you are connecting your MegaSquirt via USB or serial, there are different steps. The same goes for MS3-Pro, but as there is no Stimulator for that ECU, we just need to wait until it's wired and can be fired up.ĭisconnect the ignition coils from the harness before proceeding! Failure to do this will burn out the coils! Until you have set up the ECU and rebooted it, the coils must remain disconnected.Īt this point, if you have not already downloaded TunerStudio MS, do so now and install it. This not only upgrades the ECU to the newest release firmware but also blanks out all the settings so you can start with a fresh tune. If you have not already done so using a Stimulator the first step is to flash the newest firmware into the MS3X. Make sure you are reading the correct page for your ECU version. Because there is such a difference between the setup of the various MegaSquirt versions, each ECU has it's own configuration page. ![]() This section covers programming the MS3X / MS3-Pro ECU to run the 13B rotary. Home > RX-7 > Tech/Mods > Mods > Megasquirt > Programming The ECU (MS3X / MS3-Pro) How To Megasquirt Your 2nd Gen RX-7: Programming The ECU (MS3X / MS3-Pro) How To Megasquirt Your 2nd Gen RX-7: Programming The ECU (MS3X / MS3-Pro) ![]()
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