MegaSquirt Engine Management & Fuel Injection by DIYAutoTune.com

Limited Lifetime Warranty on Every MS3Pro Ultimate & EVO Purchase

Perhaps the most valuable standard feature yet!

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Introducing the new MS3Pro EVO Engine Management System

Faster Datalogging, more VR & analog inputs, on-board 4bar MAP and baro… plus so much more!

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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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Get your MS3Pro Apparel Here

Flex your MS3Pro colors! Cotton T’s, curved or flat brim FlexFit hats!

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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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Featured Products View All

MS3X MegaSquirt 3 with Expansion
From: $762.00
MS3X MegaSquirt 3 with 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 powerfu...
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MS2 Extra MegaSquirt 2 EMS Stand alone
From: $515.00
MS2 Extra MegaSquirt 2 EMS stand alone engine management system assembled with the latest surface mount PCB3.57 in an anodized black case - Assembled Unit Part # MS2357-C MegaSquirt has been installed on thousands of engines from purpose built race-car...
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USB to Serial Adapter -TunerStudio
$22.49
This USB to Serial Adapter has been tested and works properly with all versions of TunerStudio. We highly recommend this adapter is used if your tuning PC/laptop doesn't have a DB9 Serial connector. Or you can use another adapter with a genuine FTDI c...
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Electronic Boost Control Solenoid Kit
$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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IGN1A Smart Coil
From: $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 GM LS 24x Plug and Play
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. Experience the MS3Pro EVO. MS3Pro EVO is an evolution, not a revolution- a scaled up, more capable MS3...
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MS3Pro Ultimate Standalone Engine Management System
$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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MS3Pro EVO Standalone Engine Management System
$1,249.00
Introducing MS3Pro EVO. (supersedes 1st Gen MS3Pro) MS3Pro EVO is an evolution, not a revolution- a scaled up, more capable MS3Pro due to shared technology with big brother, MS3Pro Ultimate. MS3Pro EVO does not have peak and hold injector drivers, b...
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MicroSquirt with 8′ Harness
$388.00
The versatile MicroSquirt with 8' Harness: Standalone Engine Management System, Transmission Controller or CAN I/O Expansion Module- Version 3.0 MicroSquirt with 8' Harness is an entry-level, fully assembled ECU and universal 30" pigtail with varied a...
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MAP – GM 3 Bar MAP Sensor
From: $67.00
MAP Sensor GM 3 bar (Manifold Absolute Pressure Sensor), standard, compatible with the MS3Pro and all flavors of the MegaSquirt EMS / MicroSquirt EMS. MAP Sensor assembled in the USA, unlike the current Delphi production. Calibration is linear with...
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GM IAT Sensor with open element & pigtail
$22.49
GM IAT Sensor with open element, includes 6" pigtail GM IAT Sensor with open element is the recommended 'Fast-Response' Intake Air Temp Sensor (IAT) for use on forced induction vehicles. GM IAT Sensor with open element are proper GM-style sensors for u...
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GM Closed Element CLT/IAT Sensor with Pigtail
$18.99
GM Closed Element CLT/IAT Sensor with Pigtail Suitable for use as a Coolant Temperature Sensor (CLT) on all vehicles, or as an Intake Air Temp Sensor (IAT) on naturally aspirated vehicles. These are the proper GM-style sensors for use with the MegaSqui...
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