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How to Use the MegaSquirt 5.0 Mustang Adapter Harness
Note: The adapter harness kit is discontinued. This page is for reference for people still using this harness. For the latest in EASY Plug-N-Play Engine Management Solutions for 5.0 Foxbody and SN95 Mustangs check out these products: https://www.diyautotune.com/product/ford-foxbody-mustang-5-0-1986-1993-ms3pro-pnp-plug-and-play/ https://www.diyautotune.com/product/ford-sn95-mustang-5-0-1994-1995-ms3pro-pnp-plug-and-play/ Ford Mustang FoxBody 5.0 1986-1993 MSPNP Gen2 Plug and Play ECU Ford Mustang 5.0 SN95…
Read MoreTuning Software & Downloads
Welcome to the DIYAutoTune Downloads page. Here, you can find the latest tuning software, firmware updates, and documentation for your MegaSquirt EFI ECU or Transmission Controller. This page provides essential tools for optimizing your vehicle’s performance and troubleshooting. Our downloads are compatible with Windows, Linux, and Macintosh operating systems. Additionally, historical software versions are available…
Read MoreDIYPNP Documentation for 1983-1984 Toyota Supra
NOTE: The DIYPNPN52-K Kit has been discontinued as of 8/30/18. (If you found this page looking for our JZA80 MK4 Supra 2JZ Plug and Play PNP ECUs– click here!) 1983-1984 Toyota Supra USDM 5MGE MT Test Vehicle Details: The vehicle used for drawing up these application docs was a USDM 1983 Toyota Supra. All factory electronics/ignition…
Read MoreMS3Pro Closed Loop Idle – Stepper Valve
In this guide, we’ll walk you through the fundamentals of setting up and tuning Closed Loop Idle Control – Stepper Valve. Our aim is to present the information in a straightforward way, making it accessible even if you’re not deep into engine management theory. We’ll provide real-world examples and recommended settings based on the vehicles…
Read MoreHow to MegaSquirt Your V6 Powered Ford Probe GT or Mazda MX-6/MX-3
Using the stock distributor, wasted spark, or coil on plug Looking for the easiest way to do this? We now have a MSPNP option, currently available for 1993-1995 models. This ECU comes fully assembled and ready to plug into the stock wiring. See this link for how to install a MSPNP in these cars. To…
Read MoreHorsepower Wars $10k Drag Shootout Finals — MS3Pro Powered ‘Team Enemies Everywhere’ WINS IT ALL!!!
Horsepower Wars $10k Drag Shootout 4 Teams. 4 Cars. 10 Days to build. $10,000 budget, and $10,000 on the line for the winner. The series took a turn late last year when there was a fire in a transport vehicle and two of the cars were badly damaged, the Enemies Everywhere car thankfully avoided…
Read MoreThe EFI Tuners Guide Chapter 3 – Garbage In, Garbage Out: The Three Stages of Success
Updated September 2022 by Jerry Hoffmann Chapter 3 – Garbage In, Garbage Out: A properly installed, configured, and tuned Engine Management System makes all the difference (The Three Stages of Success) GIGO: Garbage In, Garbage Out. It’s a pretty simple principal. Whatever you put into this type of project will absolutely play a role in…
Read MoreThe EFI Tuners Guide Chapter 1 – Why should you convert to Electronic Fuel Injection?
Updated September 2022 by Jerry Hoffmann Chapter 1 – Why should you convert to Electronic Fuel Injection? “EFI is more user-friendly than carburetion and will help the more novice tuners. They can perfect the combo on the dyno, then the EFI will self-correct for atmospheric conditions. After a short learning curve, EFI actually levels the…
Read MoreDIYPNP Documentation for 1988 – 1993 Ford Mustang 5.0L
1988 – 1993 Ford Mustang 5.0L V8 Test Vehicle Details: The vehicle used for drawing up these application docs was a USDM 1993 Ford Mustang 5.0L with a manual transmission. All factory electronics/ignition system components are in place and the factory wiring harness is in perfect condition. Other notes: MAF in place GT40P heads installed…
Read MoreDIYPNP Documentation for 1985-1989 Toyota MR2
1985-1989 Toyota MR2 (AW11) USDM 4AGE MT Test Vehicle Details: The vehicle used for drawing up these application docs was a 58K original mile USDM 1986 Toyota MR2 with 4AGE Motor. All factory electronics/ignition system components are in place and the factory wiring harness is in perfect condition. This car has been turbocharged, the injectors…
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