MegaSquirt Engine Management & Fuel Injection by DIYAutoTune.com

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.

Learn More!

Check Out the MS3Pro EVO Engine Management System

Let our experts configure your complete system today!

Learn More

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.

Learn About MaxSpark!

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!

View Products

Shop by Category View All

Featured Products View All

Innovate LC-2 Digital Wideband Controller with Sensor – 38770
5 out of 5
$176.90
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...
Add to cart
Innovate MTX-L Plus Gauge – Sensor – Controller – 39180
$204.98
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...
Add to cart
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...
Add to cart
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...
Add to cart
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: ...
Add to cart
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...
Add to cart
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...
Add to cart
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...
Add to cart
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...
Add to cart
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...
Add to cart
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...
Select options
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...
Add to cart