The MegaSquirt Project has experienced explosive growth other the years, with hundreds of new MS installations occurring every week - a phenomenal success! MegaSquirt has been successfully used in all aspects of Internal Combustion engine applications including R&D, Industry, Race, and Research. The MS project has transformed itself from a simple R&D project into a full-featured mature engine control system. To reflect this the support structure has also changed to meet the needs of MegaSquirt Users.
Moving forward, the R&D forums for MegaSquirt project are in a read-only mode - no new forum posts are accepted.
However the forums will remain available for view, they still contain a wealth of information on how MegaSquirt works, how it is installed and used. Feel free to search the forums for information, facts, and overview.While the R&D forum traffic has slowed in recent years, this is not at all a reflection of Megasquirt users, which continue to grow year after year. What has changed is that the method of MegaSquirt support today has rapidly moved to Facebook, this is where the vast majority of interaction is happening now. For those not on Facebook the msextra forums is another place for product support. Finally, for product selection assistance, all of the MegaSquirt vendors are there to help you select a system, along with all of the required pieces to make it complete.
For discussing how to choose sensors and create a wiring harness for all Bowling and Grippo versions of the MegaSquirt® EFI controller.
Forum rules Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
Pin Function MicroSquirt® Connection (for MS-II the same)
A Switched 12 volts Main Relay pin 87 [RD]
B Ground Ground to same spot as MicroSquirt® [BLK]
C MAF signal ground Connect to Pin 20 [WHT/BLK]
D MAF output signal MAF Only: Pin 24 [GRN/RD] or MAF/MAP: Pin 29-baro [ORG/GRN]
Is it about pins of DB-37 connector (pin 20, 24, 29)?
I have IAT sensor on pin 20.
I have connected MAF ground to sensor ground pin 19.
MAF signal connected to pin 29.
Now I can't find out how to calibrate MAF in MegaTune.
I have created maffactor.inc with MAF Analyzer, created ../inc directory in ../car1/ folder and placed file into it.
In MegaTune I have no "Tools/Calibrate MAF Table" option.