Innovate MTX-L PLUS Digital Air/Fuel Ratio Gauge Kit 3ft w/O2 Sensor | 3924

The Innovate MTX-L PLUS is a high-precision digital wideband air/fuel ratio (AFR) gauge designed for accurate engine tuning, real-time combustion monitoring, and improved performance under demanding conditions. Built on Innovate’s patented DirectDigital™ technology, this advanced wideband system delivers fast sensor response, enhanced heater control, and highly reliable AFR readings for both gasoline and ethanol-blended fuels.

This version of the MTX-L PLUS includes a shorter 3 ft sensor cable (approximately 5 ft total length), making it ideal for compact installations where the sensor and gauge are mounted in close proximity. It retains the same high-performance monitoring capabilities as the standard version, ensuring consistent tuning accuracy regardless of application.

The system uses a Bosch LSU 4.9 wideband O2 sensor, widely regarded for OEM-level durability, fast response time, and long-term accuracy. The 52mm digital gauge displays AFR or lambda in real time, with a programmable digital needle and bright readout designed for easy visibility in both street and track environments.

Engine tuners and performance enthusiasts rely on the MTX-L PLUS for its improved analog output speed, allowing ECUs and standalone systems to react more quickly to changes in air/fuel ratio. This makes it especially useful for turbocharged, supercharged, and high-compression engines where precision fueling is critical.

The MTX-L PLUS also integrates with Innovate’s Modular Tuning System (MTS), enabling expanded data logging through LogWorks software for deeper engine analysis and tuning refinement.

Key Features

• Advanced digital wideband AFR gauge with Bosch LSU 4.9 sensor
• Innovate DirectDigital™ technology for fast, precise readings
• Enhanced heater control for improved sensor stability and lifespan
• Displays AFR or lambda in real time
• 52mm (2-1/16") digital gauge with programmable display and needle
• Faster analog output for improved ECU response and tuning accuracy
• Compatible with ethanol-blended fuels including E85
• Supports Innovate MTS data logging and LogWorks software
• Compact 3 ft sensor cable (ideal for tight installations)
• Interchangeable bezel and faceplate design for customizable appearance

Kit Includes

• MTX-L PLUS digital wideband gauge
• Bosch LSU 4.9 wideband O2 sensor
• 3 ft sensor cable (approximately 5 ft total length)
• 1” weld-in exhaust bung
• Programming cable
• Installation manual

Applications

Ideal for performance tuning, dyno testing, engine management calibration, and real-time AFR monitoring in street, track, and motorsport applications. Commonly used on turbocharged, supercharged, and high-performance naturally aspirated builds where precise fuel control is critical.