• CLOSE CART
Cart
  • CLOSE SEARCH

Quick Links

  • Shop Now
  • Tech & Install Articles
  • Software & Downloads
  • FAQ
  • CLOSE MENU
  • Products
  • Support
  • Success Stories
  • Dealer
  • News & Events
  • About Us
  • BACK
  • Technical Support Hub
  • Installation Manuals/Guides
  • Wiring Diagrams & Examples
  • Software & Downloads
  • FAQ
  • Contact Us
  • BACK
  • Success Stories
  • Share Your Build
  • BACK
  • About DIYAutoTune
  • Company Profile
  • Made in USA
  • Career Opportunities
  • BACK
  • All Product Categories
  • Shop
  • New Products
  • Bundles - ECU & Dash
  • Digital Dash
  • ECU - Accessories
  • ECU - PNP Harness & ECU Packages
  • ECU - Universal Wire-In
  • ECU - MSPNP-Pro
  • ECU - MSPNP2 Gen 2
  • ECU - Classic MegaSquirt Assembled
  • ECU - Classic MegaSquirt Kits
  • ECU - Wiring Connectors
  • ECU - Wiring Harnesses & Bundles
  • ECU - Wiring Power Distribution
  • Fuel Injectors & Components
  • Heat Management
  • Ignition Systems & Coils
  • Sensors
  • Transmission Control
  • Apparel & Merchandise
  • Refurbished
  • Services

EFI Innovations Network

DIYAutoTune.com AMPEfi.com

Buy Now, Pay Later with Affirm
DIYAutoTune
Hi, Guest!
  • Welcome Guest
  • Login
  • Register
  • Products
  • Support
  • Success Stories
  • Dealer Program
  • News & Events
  • About Us
Subscribe for News & Promotions!

Support Articles » FAQ » MegaSquirt Tech » Where can I find the MegaSquirt Schematics?

Where can I find the MegaSquirt Schematics?


MegaSquirt ECU PCB 2.2 Schematics   

MegaSquirt ECU PCB 3.0 Schematics     

MS357 Schematics   

MegaSquirt Relay and Power Board Schematics  

product disclaimer

MegaSquirt Tech


  • Quick Tech Tip: MS3Pro, MSPNP, MegaSquirt and Windows XP
  • How do I power cycle or reboot a MegaSquirt?
  • Help! I broke the pins on my MS-II Daughterboard!
  • Can I use the stock IAT and CLT sensors with the MegaSquirt?
  • Using the Relay Board with the PCBv3, what do terminals S1-S5 do?
  • Where can I find the MegaSquirt Schematics?
  • I’m considering an EFI conversion – converting my car from carbs to EFI – what do I need to consider?
  • Idle Air Control Valves vs. Fast Idle Valves— What does my car have and how can I tell?
  • Is there a central place where I can download maps that others have shared?
  • The MegaSquirt 1 and 2 ECUs seem to have only four injector output pins (or terminals on the relay board) but they are labeled as pairs so this is even more confusing, do I have two or four injector outputs? And how does either two or four outputs allow me to run 6, 8, or 12 injectors?
  • Is the MegaSquirt Engine Management System just for making more power? Or can I get better gas mileage out of it too? What about emissions?
  • Sequential Fuel Injection – Do I need sequential injection to make big power? Does MegaSquirt EFI offer Sequential Injection?
  • How does a MegaSquirt compare to having my car ‘Chipped’?

Support Center

  • FAQ
  • Where can I find the MegaSquirt Schematics?
  • Where can I find the MegaSquirt Schematics?
  • Where can I find the MegaSquirt Schematics?
  • Contact Us
DIYAutoTune

Tune it right. Tune it for less. Tune it Yourself.
DIYAutoTune Engine Management Systems.


Information

  • Shipping & Returns
  • Privacy Policy
  • Conditions of Use
  • Our Company
  • Career Opportunities
  • Sitemap

Support

  • FAQ
  • Technical & Installation Articles
  • Documentation & Information
  • Software & Downloads
  • Contact Us

Newsletter Sign-up

Get the latest news on our products, see who's winning with MegaSquirt & more!

Sign-up Now

Keep up with us


DIYAutoTune.com is part of the EFI Innovations Network

We gladly accept Credit/Debit cards, Paypal, Affirm, and Check/Money Order


Made In USA / American Made

Copyright © 2005-2025 DIYAutoTune.com

Website developed by 397 Media

Stay in the loop

Get the latest news & updates on our new products, success stories and more!

We promise not to spam you to death and you can unsubscribe at any time.

Create a new list

Free shipping to all retail customers on all orders of $799 or more Applies to ground shipping to US48 Dismiss