MegaSquirt Engine Management & Fuel Injection by DIYAutoTune.com

MaxSpark PNP Ignition Upgrades

The absolute BEST ignition system for your 1990-2005 Mazda Miata. And it's 100% plug and play! Featuring the IGN1A smart race coil, wiring harness, plug wires, bracket, and all hardware. When you want the best.

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NEW PRODUCT: 99-04 V8 Mustang Plug & Play

Supports 1999-2004 GT | 99-02 Cobra | 03-04 Mach 1 | FACTORY DASH CLUSTER in ALL MODELS! Terminator Cobra MS3Pro PNP is also available!

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Check Out the MS3Pro EVO Engine Management System

Let our experts configure your complete system today!

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YES WE ARE HERE FOR YOU!!!

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!

Click Here to read a personal message from our Founder/CEO!

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. MS3Pro powered 'Team Enemies Everywhere' from Australia WINS IT ALL.

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

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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Same Micro, More Squirt!

Now Available: AMP'd Microsquirt

The same Microsquirt size you love, but now easier to use and tougher. Featuring built in selectable pullups, stronger fuel drivers, and a tougher isolated input for fuel-only applications. We kept everything you love, and just made it better.

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Featured Products View All

Ford Mustang Terminator Cobra SVT 2003-2004 MS3Pro PNP Plug and Play
5 out of 5
$1,349.00
Ford Mustang Terminator Cobra (2003-2004) Engine Management System. Make it 'RACE-READY' with MS3Pro Plug & Play! This Mustang Cobra ECU installs in less than an hour, arrives out-of-the-box ready for up to 44lbs boost, controls your factory dashbo...
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Ford New Edge Mustang 1999-2004 MS3Pro PNP Plug and Play
5 out of 5
$1,349.00
New Edge Mustang GT 1999-2004, 99-02 NA Cobra or 03-04 Mach1 owners-- Get your car truly '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...
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Innovate LC-2 Digital Wideband Controller with Sensor – 3877
5 out of 5
$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’s circuitry is self-calibrating...
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8′ MegaSquirt Wiring Harness (MS1/MS2/MS3 Ready)
5 out of 5
$83.00
MegaSquirt Wiring Harness - 8 Feet Long We'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!!
4.7222222222222 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
Important Note: Due to supply chain challenges and the lack of ability to have parts anodized at this time, we are transitioning to brushed silver enclosures. We appreciate your understanding. The MegaSquirt 3 with MS3X expansion arrives equipped...
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MegaSquirt 2 Standalone EMS – MS2 Extra
4.75 out of 5
$515.00
Important Note: Due to supply chain challenges and the lack of ability to have parts anodized at this time, we are transitioning the enclosure used with our MS2 ECUs. Your MS2 will now be built using the MS3 enclosure, which will help facilitate po...
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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
$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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