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There are several optional or choice required steps during assembly of the PCBv3 MegaSquirt units, how are the DIYAutoTune ECUs configured?

April 26, 2017assembly configured ECU MegaSquirt pcbv3 steps units

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There are several optional or choice required steps during assembly of the PCBv3 MegaSquirt units, how are the DIYAutoTune ECUs configured?

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The MS130-C MegaSquirt-I PCBv3.0 is by default a fuel only EFI controller running B&G’s default MegaSquirt firmware. These are configured to be triggered from the (-) negative terminal of the coil by default. It is fairly easy to convert them to be triggered from a Hall/Optical/Points trigger if you prefer. Here are the steps to take: • Cut out C12 and C30. Don’t jumper them or anything, just clip the leads and leave them out. (Assembly steps 50h and 50d) • Jumper D1. You can remove the diode first, but you don’t have to. It’s easier to just solder a little lead shorting both of it’s legs together. The MS230-C MegaSquirt-II PCBv3 is by default configured for fuel and ignition control running the current release of B&G’s MegaSquirt-II firmware. These are configured to be triggered from a Hall/Optical/Points trigger by default. The IGBT High Current Ignition Coil Driver circuitry is installed, but not jumpered to be enabled.

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MegaSquirt-I EMS’s are setup by default as a fuel only EFI controller running though they are running the current stable release of the MS1/Extra firmware. These are configured to be triggered from the (-) negative terminal of the coil by default. It is fairly easy to convert them to be triggered from a Hall/Optical/Points trigger if you prefer. Here are the steps to take: • Cut out C12 and C30. Don’t jumper them or anything, just clip the leads and leave them out. (Assembly steps 50h and 50d) • Jumper D1. You can remove the diode first, but you don’t have to. It’s easier to just solder a little lead shorting both of it’s legs together. MegaSquirt-II EMS’s are by default configured for fuel and ignition control running the current stable release of the MS2/Extra firmware. These are configured to be triggered from a Hall/Optical/Points trigger by default. MegaSquirt-III EMS’s are by default configured for fuel and ignition control running the current stable release of the MS3 firmware.