Technical Articles

MegaSquirt Information And Technical Help

Note — these are here to help guide you and provide information. As with anything involving electronics, computers, and cars bad things can happen without proper research and planning. Do your homework. We cannot be responsible for any of your actions or their results whether based on this information or not. Be smart, and be safe… and for goodness sake, don’t blow your car up!

Featured Articles/Videos

MS3 and MS3Pro Failsafe Features

A Look Inside MS3Pro Ultimate’s Programmable Peak & Hold Injector Driver

Click here for the full tech article on this topic.


There are more articles to come… check back soon!

From DIY Plug-n-Play setups to starting from scratch to build your own harness, and from factory EFI conversions to MegaSquirt to carb-to-EFI conversions. These articles are being gathered from around the web to give examples of how people are implementing the MegaSquirt ECU on various vehicles. Some contain very detailed technical information and wiring diagrams, some are more general in nature. If you know of an article that should be featured here email me a link at

Documentation for Hardware

Here you will find manuals for devices which were either designed by or are not official Bowling & Grippo products, not covered on the MegaSquirt documentation. These are supported through directly.

Other Tech Articles

Various MegaSquirt tips and tricks, as well as some articles related to other items in our lineup.

Customer submitted tech articles

Tips, tricks, and cool installations sent to us by our customers.

Other articles we found on the web you might find interesting

MegaSquirt Technical Help And Installation Information

eMS-Pro documentation

Want to learn more about Engine Management Systems and Tuning?

Pick up a copy of Performance Fuel Injection Systems by our own Matt Cramer & Jerry Hoffmann.

HP1557 - Performance Fuel Injection Systems

DIYAutoTune is an MegaSquirt EMS/EFI manufacturing and distribution company. Our main offerings include: MegaSquirt Plug-N-Play Engine Management System Kit, the MS3-Pro engine management system, our MegaSquirt-I system, MegaSquirt-II, and MegaSquirt-III Assembled and MegaSquirt-III unassembled versions, Weather Pack kits and other wiring components, as well as carrying fuel injectors, fuel pumps, wideband O2 sensor systems, and more. Check out our online catalog for the full lineup.
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