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How difficult is it to assemble a MegaSquirt myself?
It takes most people new to electronics assembly 6-10 hours for their first time assembly of a PCBv3 ECU, a bit less for a PCB2.2, and the stimulator (which you should do first) is very simple and takes maybe an hour to assemble for a first-timer. Check out Youtube for some good solder technique videos…
Read MoreWhat do I need?
Another question that doesn’t have a quick short answer… but the quick short answer is: An ECU (there are a few options here of course), a stimulator (95% required), and a tuning cable. Optionally you may need a USB-Serial Converter if your laptop doesn’t have a DB9 serial port, and/or a Wideband O2 system such…
Read MoreWhat the heck is a MegaSquirt?
The MegaSquirt line of Engine Management Systems are Do It Yourself (DIY) systems capable of full standalone engine management at a fraction of the cost of the what the ‘big dogs’ charge. They were designed with education and performance in mind, so that the do it yourselfer could learn the in’s and out’s of engine…
Read MoreCommon MegaSquirt Modifications
Adding a second wideband o2 sensor to the MegaSquirt-II 2. Adding an relay control circuit to the MegaSquirt PCB-3 3. Adding a ‘Pullup Resistor’ to the ignition input Adding a second wideband o2 sensor to the MegaSquirt-II If you’re running an engine with true dual exhausts, you could use a single wideband sensor for both…
Read MoreMegaSquirt and EMS Related Technical Articles
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……
Read MoreDIYAutoTune.com Technical Videos & How-To’s
MegaSquirt Related Install Videos MegaSquirt-II EFI Configuration and First Start Flashing the MS-II Firmware (example uses 2.888) Configuring the MS-II ECU for the engine/injectors/etc Starting the car and getting a proper idle Passing a MegaSquirt Relay Cable thru your firewall safely Removing pins from a DIYAutoTune Harness or Relay Cable Tuning Software MegaMeet…
Read MoreCarb-to-EFI Conversion
Project Goals To learn, first hand and hands on, all that can be learned about the pros/cons of carbs vs. EFI. What manifolds work best, what off-the-shelf TBI systems work best. To be completely non-biased in our approach, sure we’re EFI guys, but if the carb shows a pro over EFI somewhere, great! I’m confident…
Read MoreHow to MegaSquirt Your Water Cooled VW
If you haven’t already, please read the ‘disclaimer’ at the top of the parent page here. Applications: VW used quite a number of ignition systems on their water cooled engines. This article covers the Hall effect distributor with four teeth, used on most of the ’80s era inline 8V and 16V motors. Later VWs used…
Read MoreHow to MegaSquirt Your Volvo 240, 740, or 940
If you haven’t already, please read the ‘disclaimer’ at the top of the parent page here. Overview The Volvo 240 and its relatives have a well balanced rear wheel drive chassis and a solidly built engine, but when you start adding boost the stock engine management system can have problems accounting for the extra air…
Read MoreHow to MegaSquirt Your Vehicle With Vintage Mopar Ignitions
MegaSquirt for vintage Mopar ignitions If you haven’t already, please read the ‘disclaimer’ at the top of the parent page here. Engines covered: Pre-TBI LA series (small block) V8, all B and RB (big block) V8, and all slant six engines when equipped with electronic distributor Types of Mopar ignition systems Chrysler offered these engines…
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