Get Affordable, Plug-and-Play Engine Tuning with a Summit Racing™ Megasquirt Engine Management Combo

Our Summit Racing™ Megasquirt Engine Management Combos give you the flexibility to precisely tune your engine from startup to wide-open throttle at a very affordable price.

The combos are based on the DIYAutoTune Megasquirt Gen 2 Engine Management System. It’s a standalone system that is a fully plug-and-play replacement for the factory ECU with no additional wiring required for basic operation. It has a preloaded base map to get your engine up and running, ready for additional tuning.

Basic Tuning Features
• Real-time tuning and data-logging with a laptop connection
• 16 x 16 fuel tables allow high-resolution tuning
• 12 x 12 ignition tables
• Multiple acceleration enrichment strategies
• Closed-loop idle speed control
• Air conditioner control
• Onboard peak and hold drivers support both high and low impedance injectors—no external ballast resistor is needed
• Allows removal of stock airflow meter or stock MAF sensor, if so equipped

Advanced Tuning Features
• 12 x 12 air fuel ratio target tables for use with wideband oxygen sensor for precise tuning and table trim
• Built-in 2-step rev limiter/launch control with flat shift
• Real-time barometric correction
• Internal 4-bar MAP sensor reads up to 44 PSI of boost
• Overboost protection
• Closed-loop boost control (requires boost solenoid kit)
• Knock sensor input with adjustable sensitivity
• Headphone output for knock sensor—listen for knock while you tune
• Input for flex fuel sensor—switch between E85 and gasoline on the fly
• Table switching input—change fuel and spark maps on the fly for different fuels, nitrous activation, etc.

The DIYAutoTune Megasquirt Gen 2 Engine Management System also has a CAN Bus connector that accepts Megasquirt-compatible devices for additional functions, like EGT input, automatic transmission controller, and additional sensors.

We also include an Innovate Motorsports MTX-L Plus Digital Wideband Air/Fuel Ratio Gauge Kit. It features DirectDigital™ signal processing and Advanced Sensor Control that samples oxygen sensor data faster and more frequently so you get a real-time picture of the air/fuel ratio at any point in the engine’s powerband. The MTX-L Plus also has an advanced oxygen sensor heater control for more accurate readings—a big plus with boosted engines. Other features include:
• Large digital readout and programmable “digital needle” provides the functionality of a needle gauge with pinpoint digital accuracy
• Digital display in AFR or Lambda
• Digital and analog inputs and outputs
• Ability to calibrate O2 sensor for maximum accuracy
• Bosch LSU 4.9 wideband O2 sensor included

The final component in our Megasquirt Engine Management Combos is a DIYAutoTune serial to USB port adapter to connect the Megasquirt ECU to a computer that doesn't have a DB9 Serial connector.

Summit Racing Megasquirt Engine Management Combos are available for these vehicles:
• 1986-95 Mustang GT 5.0L
• 1990-2000 Mazda Miata
• 1987-93 BMW E30/E32/E34
• 1989-94 Nissan 240SX with KA24E or KA24DE
• 1989-1994 Nissan Silvia S13 chassis with SR20DET and manual transmission
• 1990-1993 Toyota Celica All-Trac and 1991-1995 Toyota MR2 Turbo, 3S-GTE with manual transmission

CHECK OUT OUR SUMMIT RACING MEGASQUIRT ENGINE MANAGEMENT COMBOS