MegaSquirt Engine Management & Fuel Injection by DIYAutoTune.com

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With increased sales/demand for our products and the Covid induced workforce challenges and supply chain challenges... we're working hard to stay on top of things and take care of you!We are here to answer your emails/calls. We are shipping every day. Most orders ship immediately, though some of our higher demand products may take a few days. In some cases we're telling people two weeks, then working hard to surprise them when it arrives in a few days (80% of the time we can do that). We've added a new tech support person recently, and we're currently hiring for production, order processing, and shipping positions so that we can serve you even better!We are taking care of 20+ families while busting our tails to take care of you all, and we greatly appreciate you letting us serve you. THANK YOU FOR YOUR SUPPORT!

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Horsepower Wars $10k Drag Shootout Finals — MS3Pro Powered ‘Team Enemies Everywhere’ WINS IT ALL!!!

4 Teams. 4 Cars. 10 Days to build. $10,000 budget, and $10,000 on the line for the winner.

Check out the video of the finals!! It doesn't get closer than this.

NEW PRODUCT: 99-04 V8 Mustang Plug & Play

Supports 99-04 GT | 99-02 Cobra | 03-04 Mach 1 | FACTORY DASH CLUSTER in ALL MODELS!

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MS3Pro Plug & Play for Chevy LSX

Available now for MS3Pro Ultimate & EVO, just choose your injector connectors and get to tuning!

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4L60E & 4L80E Plug & Play Transmission Control

The versatile MicroSquirt can control 4L60E & 4L80E transmissions with just a few clicks! No wiring necessary.

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Lifetime Warranty on Every MS3Pro Ultimate & EVO Purchase

Lifetime Warranty. Lifetime Support. Lifetime Confidence. Standard Features for MS3Pro!

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Check Out the MS3Pro EVO Engine Management System

Let our experts configure your complete system today!

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Get your MS3Pro Apparel Here

Flex your MS3Pro colors! Cotton T’s, FlexFit hats and Ultra soft hoodies up to 20% Off!

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Featured Products View All

Ford Mustang 1999-2004 MS3Pro PNP Plug and Play
5 out of 5
$1,349.00
Get your 99-04 V8 Mustang GT, 99-02 NA Cobra or 03-04 Mach1 'RACE-READY' with MS3Pro Plug & Play! This ECU installs in less than an hour, arrives out-of-the-box ready for up to 44lbs boost and is CAN enabled for seamless control of other MegaSquirt ...
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Ford Mustang Cobra SVT Terminator 2003-2004 MS3Pro PNP Plug and Play
$1,349.00
Get your 2003-2004 Ford Mustang SVT 4V Terminator Cobra 'RACE-READY' with MS3Pro Plug & Play! This ECU installs in less than an hour, arrives out-of-the-box ready for up to 44lbs boost, controls your factory dashboard, and is CAN enabled for seamless...
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Innovate LC-2 Digital Wideband Controller with Sensor – 3877
~~$189.00~~ $166.00
The evolution of the world’s most popular stand alone digital wideband O² sensor controller, the Innovate Motorsports LC-2 builds upon the legacy of the LC-1 by adding simplicity and leading edge technology. The LC-2 utilizes the only 100% digital wide...
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8′ MegaSquirt Wiring Harness (MS1/MS2/MS3 Ready)
5 out of 5
$83.00
MegaSquirt Wiring Harness - 8 Feet LongWe've completely redesigned our wire harness to help you get your fuel injection installation right the first time with several new features to help make your installation as easy and reliable as possible:...
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USB to Serial Adapter – Trouble Free!!
4.6875 out of 5
$28.99
Important Note: The original USB2920 was discontinued by its manufacturer. We are now providing an updated part, but we are continuing using the same part number to make it easy for you to find. This FTDI chipset USB to Serial Adapter has been tested...
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MegaSquirt 3 ECU with MS3X Expansion
5 out of 5
$762.00
The MegaSquirt 3 with MS3X expansion arrives equipped with features surpassing MS2 & MS1 systems, like sequential fuel & spark, 2 step, progressive nitrous, boost control, onboard traction control & much more! MS3X paved the way for the pow...
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MegaSquirt 2 EMS Stand alone – MS2 Extra
4.75 out of 5
$515.00
MegaSquirt 2 EMS (with MS2 Extra firmware) stand alone engine management system assembled with the latest surface mount PCB3.57 in an anodized black case - Assembled Unit Part # MS2357-CMegaSquirt has been installed on thousands of engines from purpos...
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Electronic Boost Control (EBC) Solenoid Kit
5 out of 5
$58.00
This electronic boost control solenoid can be used with the MS3-Pro/MSPNP as well as any DIY Style MegaSquirt EMS (with the appropriate mods), or with other electronic boost controllers to control boost by adjusting the pressure to a turbo wastegate. Th...
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Innovate MTX-L Plus Gauge – Sensor – Controller – 3918
~~$219.00~~ $209.00
Innovate Motorsports' New MTX-L PLUS wideband gauge features their patented DirectDigital™ technology and all-new Advanced Sensor Control which receives feedback from the sensor more frequently and optimizes heater control. The combination of these te...
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IGN1A Smart Coil
5 out of 5
$71.00
The IGN1A Smart Coil by AMP EFI requires no CDI Ignition Module to produce 103 mJ per spark, with a longer spark duration (2.9 ms) than what you'd see with a capacitive discharge. They are the same monster coils used in Street Outlaws No Prep Kings conten...
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MS3Pro EVO with GM LS 24x Plug and Play Harness
5 out of 5
From: $1,749.00
MS3Pro EVO GM LS 24x Plug and Play includes an MS3Pro EVO ECU, TunerStudio software and the most rugged & durable GM 24X custom harness in the aftermarket. Experience the MS3Pro EVO.MS3Pro EVO is an evolution, not a revolution- a scaled u...
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MS3Pro Ultimate Standalone Engine Management System w/ Harness
5 out of 5
$1,499.00
Experience the MS3Pro ULTIMATE by AMP EFI, featured in Street Outlaws No Prep Kings contestant, The Hulk.Developed from the MS3Pro 1st Gen platform, the MS3Pro ULTIMATE brings NEXT LEVEL capability to MS3Pro's staggering feature set beginning with a...
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