MS3Pro Engine Management Systems from AMPEFI

Experience the MS3Pro Ultimate

Everything you know and love about the MS3Pro system plus so much more. Check out the full list of improvements to handle your high-horsepower needs.

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MS3Pro LS 24x & 58x Plug and Play

All the features of MS3Pro combined with our easy plug and play harness, just choose your injector style and go!

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4L60E & 4L80E Plug & Play Transmission Control

Get your MS3Pro Apparel Here

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

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Featured Products View All

MS3Pro 1984-1987 Buick Grand National Plug and Play
From: $1,229.00
MS3Pro 1984-1987 Buick Grand National Plug and Play (P/N: MSPNPPro-GNX8487) Fits 1984-1987 Buick Regal with the 3.8 Turbo V6, including Grand National, T-Type, and GNX. MS3Pro 1984-1987 Buick Grand National Plug and Play Model Features: Fully Plug...
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MS3Pro ULTIMATE Standalone ECU Only
From: $1,349.00
Experience The ULTIMATE. Developed from the MS3Pro 1st Gen platform, the Ultimate brings NEXT LEVEL capability to MS3Pro's staggering feature set beginning with a new high quality aluminum IP65 rated, water resistant enclosure. The Ultimate provide...
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MS3Pro EVO Standalone ECU Only
From: $1,099.00
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. EVO does not have peak and hold injector drivers, but it d...
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MS3Pro ULTIMATE Standalone Engine Management System
$1,499.00
Experience The ULTIMATE. Developed from the MS3Pro 1st Gen platform, the Ultimate brings NEXT LEVEL capability to MS3Pro's staggering feature set beginning with a new high quality aluminum IP65 rated, water resistant enclosure. The Ultimate provide...
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MS3Pro EVO Standalone Engine Management System
$1,249.00
Introducing MS3Pro EVO Standalone Engine Management System (supersedes 1st Gen MS3Pro) MS3Pro EVO Standalone Engine Management System is an evolution, not a revolution- a scaled up, more capable MS3Pro due to shared technology with big brother, MS3Pro...
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MS3Pro Standalone ECU with 8′ Wiring Harness
5 out of 5
$1,199.00
IMPORTANT PRODUCT UPDATE** MS3Pro-Pkg1 has been discontinued and superseded by MS3Pro EVO effective May 1, 2017. This product page, including documentation, downloads & product FAQ tabs below, remains active for archive purposes. Compare MS...
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AMPEFI Transmission Controller with 4L60E Subharness
$499.00
AMPEFI 4L60E Plug and Play Transmission Control Seamlessly control your 4L60E transmission with AMPEFI Transmission Control! The supplied 4L60E subharness provides a simple, plug and play integration with MS3Pro and directly mates with our LSx drop ...
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MS3Pro 8ft Wiring Harness
$249.00
MS3Pro 1st Gen Harness is discontinued and superseded by MS3Pro EVO. 8 foot (2.4 m) flying lead type harness for the MS3Pro. It has the MS3Pro's AMPSEAL connectors on one end and the other end is unterminated for installing your own connectors. This ha...
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MS3Pro Logo T Shirt- Pink Ladies
$15.00
'Official' MS3-Pro Pink Ladies Cut Logo T Shirt, available in various sizes! MS3-Pro: Advanced Power Management
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IGN-1A Race Coil
5 out of 5
From: $71.00
The IGN-1A Race Coil is a smart coil designed to provide 103 mJ per spark, with a longer spark duration (2.9 ms), exactly what is necessary for high rpm, high compression, forced induction and/or nitrous engines! Each IGN-1A Race Coil features a buil...
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MAP – GM 3 Bar MAP Sensor
$67.00
Standard GM style 3-bar MAP Sensor (Manifold Absolute Pressure Sensor), compatible with the MS3-Pro and all flavors of the MegaSquirt EMS / MicroSquirt EMS. Assembled in the USA, unlike the current Delphi production. Calibration is linear with 1.1 k...
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MAP – GM 3 Bar MAP Sensor 6″ Pigtail
$12.49
Compatible with standard keying of GM's 3-Bar Map Sensor. This plug features 6" of pigtail and is ready to be added to your wiring harness. Color coding when used with our 3 bar MAP sensor is as follows: Black - Sensor Ground Green - Signa...
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