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Success Story

James McEntire’s 1968 Chevrolet Camaro

673cid Billet Hemi by Goodwin Competition Engines Running MS3Pro   2015 Drag Week Results: Pro Street Naturally Aspirated Class 5 day average = 9.416 @ 162.494mph James ‘Doc’ McEntire entered the event with zero hours or miles on his combination other than a 30 minute tuning session the evening before the event started!  However, the…

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Jerry Hoffmann land speed 240sx diyautotune land speed s13 240sx engine bay 2jz
Success Story

Racing – Events/Results

Racing the DIYAutoTune Land Speed 240sx To our knowledge… this is now the world’s SECOND FASTEST 240sx.  We know the owners of the first, they’re rooting for us. Racing Follow along here as we document each of our outings, post up pics and timeslips, and possibly even document any particularly interesting shenigans we find ourselves…

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Air & Fluid Temperature Sensor Diagram

This article offers detailed wiring diagrams for air and fluid temperature sensors, helping you correctly integrate these sensors into your setup. Whether you’re monitoring intake air temperature or fluid temperatures like coolant or oil, these diagrams provide clear guidance to ensure accurate readings and reliable performance. Use these resources to simplify your installation process and…

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Pressure Sensor Diagram

This article features detailed wiring diagrams for pressure sensors, covering everything from MAP sensors to fuel and oil pressure sensors. These diagrams are designed to help you connect your sensors accurately, ensuring precise pressure readings and optimal performance. Whether you’re setting up a single sensor or multiple inputs, use these guides to streamline your installation…

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Electronic Boost Controller (EBC) Diagram

This article provides comprehensive wiring diagrams for electronic boost controllers (EBC) using Single and Dual Port Wastegates. These diagrams are designed to help you understand the correct connections needed to achieve precise boost control, whether you’re running a basic single port setup or a more advanced dual port configuration. With clear visuals and step-by-step guidance,…

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Wiring Diagrams & Examples

This section provides detailed, realistic diagrams to make wiring jobs involving implementing your MS ECU easier. These resources are designed to guide you through tasks that you may only need to do once, breaking down complex wiring into clear, step-by-step visuals. Our goal is to simplify the process and help ensure successful installations, even for…

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futuristic wiring diagram
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DIYAUTOTUNE QuickTip: The Advantage of Proper Grounding

By implementing effective grounding techniques such as dedicated grounding points, appropriate wire sizing, and ground isolation, you can optimize the performance and reliability of your EFI system. Don’t overlook the power of a solid ground – it’s the foundation for a smoothly running engine.

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DIYAutoTune Eagle Made in the USA
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Engine management made in the USA – or on your kitchen table

At DIYAutoTune, we believe in supporting local manufacturing, and when we need to outsource parts like Printed Circuit Boards, some of our wiring harnesses, or enclosures, we always keep production in the USA. AMPEFI MSPNP and MS3Pro Engine Control Units as well as DIYAutoTune’s other MegaSquirt assembled ECUs all have final assembly at our production…

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DIYPNP Sequential Injection

Sequential Injection The MS2/Extra 3.0.3 and higher code allows for 4 channel sequential injection with a DIYPNP. This can run sequential injection on a 4 cylinder, or semi-sequential on a 6 or 8. To use this, you’ll need our DP_SEQMOD-K add on board. It attaches to the proto area with the included 10 pin header;…

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Support Article

DIYPNP Sequential Injection

Batch versus Sequential Fuel Injection Check out Chapter 4 in the EFI Tuners Guide for more information on the benefits of sequential versus batch fuel injection. DIYPNP Sequential Injection The MS2/Extra 3.0.3 and higher code allows for 4 channel sequential injection with a DIYPNP. This can run sequential injection on a 4 cylinder, or semi-sequential…

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