MegaSquirt is a revolutionary performance oriented engine management system (EMS). Designed by Grippo & Bowling, it is one of the few low cost but fully featured aftermarket engine management systems available today.

Each SymTech Labs MegaSquirt ECU comes professionally assembled and configured for your application. No soldering, crimping or connecting is required inside the unit whatsoever. Simply plug in a SymTech Labs MegaSquirt wiring harness and you're good to go!

This MegaSquirt ECU includes an MS3 processor and v3.0 or v3.57 board. The MS3 processor is a faster and more powerful upgrade to the MS2 processor. It offers SD card datalogging and USB connectivity as standard features. For additional fuel injector outputs, general purpose outputs, general purpose analog and digital inputs and a built in cam sync input, please select the MS3X expansion board below.

MegaSquirt units are custom built to order and require a two week lead time. Please contact our sales team if you need expedited service.

SymTech Labs 420A MegaSquirt Wiring Guide: PNG | PDF
SymTech Labs 4G63 MegaSquirt Wiring Guide: PNG | PDF
SymTech Labs Generic MegaSquirt Wiring Guide: PNG | PDF

SymTech Labs MS3X Expansion Board Wiring Guide: PNG | PDF

All MegaSquirt ECU's are NC/NR.