If you need to contact us immediately you can reach our support team at Mon-Fri 9-4 EST.

The FAQ, Documentation and Forums, all outlined below, will cover a large percentage of your questions but we’re always here to help.


Here is is… The FAQ — Check it out as we’ll be updating it as we receive new questions not covered here.

Note this is not to be confused with the official MegaSquirt FAQ which you can find at the ‘MegaSquirt Docs & Info’ link below.

Technical Articles & Writeups

Great tech articles that provide helpful information on planning, building, installing, and tuning your EFI system.

MegaSquirt Documentation & Info

Almost all of your MegaSquirt related questions are covered in the appropriate MSExtra Manual and it’s code specific variants.

MegaSquirt Software & Downloads

Tuning Software Packages, Log Viewers, Standard and Customized MegaSquirt Firmware

MegaSquirt Discussion Forums

Support forum for MegaSquirt installations running MS1/Extra, MS2/Extra, or all MS3 applications. This forum provides discussion related to firmware, tuning, installation, hardware debugging, and almost any other aspects of MegaSquirt installation. Also includes support for MicroSquirt, including alternate firmware to run MicroSquirt as a transmission controller.

This forum covers most of the official MegaSquirt discussion, and receives the most traffic by far of any of the official MegaSquirt forums. You’re likely to get an answer fastest here. This is where the MS experts hang out, and many of them are eager to help to spec out a system or get your car running just right. Our tech support team spends much of there time on this forum are well. Don’t be a stranger; we’re lurking ready to help out.

Additionally however, there is:

Hardware and firmware support for the original B&G firmware on MS1’s and MS2’s. Does not cover installations using MS1/Extra or MS2/Extra code, MicroSquirt, or MS3.

Success Stories: Most people with MegaSquirt running on their cars don’t come back and tell us about it, but here’s a few hundred people who have. They may provide a roadmap for your install in some cases, or at least some inspiration.

Discussion of the original Bowling & Grippo code on MicroSquirt.

Label Key for Kits

Legend for Kit Labels
Legend for Kit Labels