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New Firmware Available
Blog Article

MS3 Firmware Release: MS3 pre-1.6 alpha 1 firmware

For our customers that like to be on ‘the bleeding edge’ of new features, this pre-release ‘alpha’ firmware has just been released for all MS3 and MS3 based ECUs including MS3Pro PNP and MS3Pro Evo/Ultimate/Gen1 products. Alternately, in some cases our Tech Support Team may suggest you try this to add a particular feature or address a particular issue.

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Aeromotive electric fuel pump
Blog Article

The Heart of it ALL: Electric Fuel Pumps

In this week’s DIYAutoTune QuickTip we explore the world of automotive electric fuel pumps, plumbing, and wiring in this comprehensive guide. Discover how these components impact reliability and engine performance. From selecting the right pump size to maintaining optimal flow, we cover every aspect to help you ensure success right from the start!

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Support Article

MS3Pro Closed Loop Idle – PWM Valve

In this guide, we’ll walk you through the fundamentals of setting up and tuning Closed Loop Idle Control – PWM 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…

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Support Article

MS3Pro Injector Deadtime

In this article, we will explain how to convert injector dead time settings into a format suitable for your MS3Pro.  We will be covering the below situations: Injector Deadtime Spreadsheet FW 1.5.x or Older FW 1.6.x or Newer Updating from FW 1.5.x to 1.6.x or Newer If you have updated your firmware to Version 1.6.x…

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Support Article

Using DIYAutoTune.com’s Revised Pattern Nissan Optical Trigger Discs

Converting your Nissan distributor to a more MegaSquirt friendly design Many Nissans used a distributor or CAS with a set of four or six inner slits and 360 outer slits. Current MS3 firmware supports the SR20DET, RB series, and VG30DE/DETT trigger wheels, but MS1 and MS2 are only able to use this type of trigger…

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MAT / CLT Curve - MegaSquirt EFI
Blog Article

Tuning the MAT / IAT Correction Table to eliminate Heat Soak

Have you ever been driving your car, maybe on a warm day, and all is going well. You park and shut ‘er down for a few minutes, come back to fire her up, and she runs completely different, or struggles to run at all for a few seconds? We can help! Here’s how to eliminate Heat Soak issues during hot restarts, we walk you through dialing this in on your MegaSquirt, MSPNP, or MS3Pro ECU!

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Support Article

The EFI Tuners Guide – Glossary of Terms

Updated August 2022 by Jerry Hoffmann EFI Tuners Guide – Glossary of Terms This is a living document that I’ll be updating as I continue to write future chapters of this EFI Tuning Guide.  This Glossary aims to define and to help you understand all of the various terms and TLA’s (Three Letter Acronyms… lol)…

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LS Engine MaxSpark PNP Ignition System IGN1A Ignition Coils Passengers Side Wiring Harness and Spark Plug Wires Plugged in
Support Article

The EFI Tuners Guide Chapter 2 – Why should you convert to Electronic Ignition Control?

Updated September 2022 by Jerry Hoffmann Chapter 2: Why should you convert to Electronic Ignition Control?  And what is a timing table?   Timing Tables and Advance Curves in a modern electronic ignition system versus the old school distributor and mechanical/vacuum advance.   What’s better and why?  That is the question. I’m going to do you…

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James 'Doc' McEntire's Drag Week Champion 1967 Camaro running MS3Pro - Burnout time!
Support Article

The 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…

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Converting the pattern on a 7X GM trigger wheel to its composite log.
Support Article

Using the Tooth Logger and Composite Logger

The tooth logger and composite logger TunerStudio’s tooth logger and composite logger are powerful tools for troubleshooting problems with the MegaSquirt’s RPM input. These are both under the Diagnostic and High Speed Loggers menu. The tooth log records the time between individual pulses from the crankshaft position sensor. The composite log works similarly to a…

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