Skip to the content

FREE SHIPPING - Orders over $799 in (Continental U.S.)

Sale
Shop
Tuning
Support
Dealer Program
News & Events
About Us
Contact

Country/region

DIYAutoTune

Bundles Dash/ECU Digital Dash/Display ECU Fuel Heat Management Ignition Kits/Coils Sensors Transmission Wiring Merchandise Refurbished

Universal Mount
Universal Bezel

Buick
Ford
Mazda

Universal
Buick
Ford
Mazda

Universal
Buick
Ford
Mazda

PNP Installation Harness
Sensor Breakout Board
Full/Mini Keyboards

AMP PNP (MSPNP-Pro)

BMW
Buick
Ford
Mazda
Subaru

AMP PNP Harness & ECU

Ford Coyote
GM LS
Honda K-Series

MS3Pro EVO+
MS3Pro EVO+ HC
AMP Competition
MS3Pro Mini
MS3Pro Module
AMP'D MicroSquirt

BMW
Ford
Mazda
Nissan
Porsche
Toyota

Classic MegaSquirt

MicroSquirt
ECU Assembled
ECU Kit
GPIO Kit
Service Parts
Cases & Endplates

Electronic Boost Controller
PNP Options Connectors
EVO/Ultimate Fuses
Tuning Cables

CAS
DBW
QuadEGT
QuadSpark
Wideband

Tach Adapter
Voltage Isolator
VR Conditioner
Dual Driver/Inverter
Ignition Module

Flex Fuel Sensors

Sensor
Pigtail
Connector & Pins

34 lb/hr
60 lb/hr
80 lb/hr

Fuel Injector Connectors

EV6
EV1
Denso

Retrofit Injector Bungs

EV1
EV14
Pico

Black Silicon
Silver Velcro
Gold Velcro

Heat Shield/Blanket

Single Layer
Dual Layer
Blanket

Gold Reflective Sheets
Gold Reflective Tape

MaxSpark Ignition Kit

LS Kit
Miata Kit

Smart Ignition Coils

IGN1A Coils
IGN1A Connector & Pins
IGN1A Pigtail

Standard Ignition Coils

IGN-1
IGN-1CD
IGN-4
IGN-6

Ignition Module/Driver

QuadSpark
HSD-4
AXM-150 Ignition Module

Controller
GM Pigtail
GM Connector & Pins

Crank/Cam/Speed Sensors

Threaded
Tab Mount
BWM E30 Cam

Crank Trigger Wheels

8.25 inch
6.75 Inch
4 Inch
Nissan Optical

EGT Kit/Sensors

EGT Module & Probe Kit
EGT Probe Kit
EGT Module
EGT Components

Flex Fuel Sensors

Sensor
Pigtail
Connector & Pins

1/8" NPT 3-Bar
1/8" NPT 4-Bar
GM 3-Bar

Pressure Sensors

0-100 PSI
0-150 PSI
Combo 100PSI/500F
Combo 300PSI/500F

Temperature Sensors

IAT - Open Element
CLT - Closed Element
Weld-On Bung

1 Inch Rear
1/2 Inch Front

Wideband Controller/Sensors

Controllers
Sensors
Weld-On Bung

Flying Lead

4L80E
4L60E

Amphenol/Deutsch
AMPSEAL
Bulkhead
Superseal
Weather Pack
Tools

Connector/Pigtail

Fuel Injector
Ignition Coil
MAP Sensor
PNP Options Connectors
Pressure Sensor
Temperature Sensor

Flying Lead Harness
PNP Engine Harness
PNP Transmission Harness

Power Distribution

Power Package
Relay Kit
Fuse Block

Add-a-Wire
MS3Pro
MS3X
MS3
MS2
Shielded

AMP EFI
MS3Pro
DIYAutoTune

MS3Pro

AMP EFI
MS3Pro
DIYAutoTune
Digital Dash EFI

Universal
MSPNP-Pro
MSPNP2 Gen 2

Transmission Control

4L60E
4L80E

Search for products

Country/region

Your cart

Your cart is empty

Home
Sale
Shop
Tuning
Support
Dealer Program
News & Events
About Us
Contact

ECU - Classic MegaSquirt

Sort by:

10 Products

Classic MegaSquirt PCB3.0 Components Kit

In stock

Regular price $144.99

No reviews
MPX4250AP 2.5 Bar MAP Sensor

In stock

Regular price $39.99

5.0 1 review
Classic MegaSquirt Replacement Static Kit

In stock

Regular price $29.99

No reviews
Classic MegaSquirt Replacement Resistor Kit

In stock

Regular price $29.99

No reviews
Classic MegaSquirt Replacement Hardware Kit

In stock

Regular price $29.99

No reviews
Classic MegaSquirt Replacement Capacitor Kit

In stock

Regular price $19.99

No reviews
Classic MegaSquirt Replacement FLMY Kit

In stock

Regular price $9.99

No reviews
Classic MegaSquirt Replacement Diode Kit

In stock

Regular price $9.99

5.0 1 review
Classic MegaSquirt GPIO Heatsink Only

In stock

Regular price $9.99

No reviews
Classic MegaSquirt PCB3.0 Heatsink Only

In stock

Regular price $9.99

No reviews

Expert Support

Support from people who wrench

Proudly Made in the USA

Engineered, built, and tested here

Same-Day Shipping

Order before 12PM EST, ship today

Tested. Tuned. Proven

Performance you can count on

2405 Murphy Blvd

Gainesville, GA 30504

Mon-Fri 9am-4:30pm

678-261-8789

Information

Privacy Policy
Return Policy
Shipping Policy
Support Policy
Terms of Service
Off-Road Race Disclaimer
Made in USA

Support

Product Manuals
Wiring Diagrams
Software & Downloads
Base Tunes & Firmware
How-to Guides
Videos

Newsletter

Subscribe to our newsletter for special offers

Your email

Facebook
Instagram
YouTube

© 2026, DIYAutoTune - Powered by Shopify