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Using the HSD-4 High Side Driver

HSD-4 High Side Driver Module Overview The HSD-4 high side driver module provides four high side drivers for solenoids that need 12 volt power instead of ground. Wire a ground triggered output from an MS3-Pro, MicroSquirt, or MegaSquirt to the HSD-4’s input, and it will supply a 12 volt output with up to 8 amps…

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Common MegaSquirt EMS Price Quotes

Common Quotes for a complete MegaSquirt System Some common price quotes for complete systems, both assembled and un-assembled in kit form.  This is to give you a rough idea and doesn’t cover all situations.  You may want to trim it down a bit, or need something else. Here’s a page with info on my recommendations…

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Extra Inputs and Outputs – DIYPNP v1.1

There is much you can control with DIYPNP beyond fuel and ignition. Exactly what you can control will depend on the code loaded. This chart shows which points on the DIYPNP can be used for what function for current, beta, and proposed code variants. The DIYPNP also brings out the CANBUS for connection to (currently…

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Extra Inputs and Outputs – DIYPNP v1.5

There’s a lot you can control with the DIYPNP beyond fuel and ignition. Exactly what you can control will depend on the code loaded. This chart shows which points on the DIYPNP can be used for what function for current, beta, and alpha code variants. The DIYPNP also brings out the CANBUS for connection to…

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DIYPNP V1.5

The DIYPNP board lets you build your own plug and play engine management systems. The core of the DIYPNP kit is a MicroSquirt module that plugs into an expansion ‘mainboard’ with on board circuits for many features, including direct coil control, boost control, knock control, and several general purpose inputs and outputs. You assemble this…

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EFI Tuners Guide - Laptop Tuning 1967 Camaro Drag Car with MS3Pro using USB-2920 USB to RS232 Adapter 1
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The EFI Tuners Guide – Learn How EFI works!

A practical guide on how to understand and tune your engine/car with Electronic Fuel Injection and Ignition with an aftermarket Standalone Engine Management System  Updated September 2022 by Jerry Hoffmann Our EFI Tuners Guide is aimed first and foremost to the DIY EFI installer, configurer, and tuner, this guide will help you understand WHY you…

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Using the Chevy Vortec ignition module

A basic ignition module While some MegaSquirt versions have ignition modules built in, many versions do not, including the MicroSquirt, wire-in MS3Pros, and many others. These have 5 volt logic level spark outputs instead. If you need to run a distributorless ignition where the coils need an external ignition module, our QuadSpark is a great…

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Support Article

Loading Firmware

Loading the Firmware onto your DIYPNP This article will cover how to load firmware on your DIYPNP ECU, in a step-by-step manner. Step 1 — Download the firmware The first thing we’ll want to do is make sure we’ve downloaded the firmware version that we are planning to upload to the DIYPNP ECU. You can…

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Adapter Boards

Some boards have extra components on the adapter board that you may want to assemble as well. See these links & instructions below for adapter boards with special components. Nippondenso 52 pin: stepper driver Delphi 56 pin: stepper driver Ford 60 pin: TFI output Bosch 55 pin: Two extra spark outputs Nippondenso 52 pin: Adapter Board Assembly…

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MegaSquirt Docs & Info

Almost all of your questions can be answered by taking a look at the following links. As there are several MegaSquirt code forks, there are a couple different manuals out there. MegaSquirt manuals at MSExtra.com – This covers the MS1/Extra code, MS2/Extra code, and MS3. Subjects covered include assembly, firmware, and tuning. These are the…

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