Innovate Motorsports LM-1 Digital Air/Fuel Ratio Meter User Manual

About this manual

The LM-1 is a hand-held instrument designed to measure the Air/Fuel Ratio (AFR) or Lambda for gasoline-driven engines. It utilizes a special wide-band oxygen sensor to provide direct readings of the actual air fuel ratio in operation, displaying both numeric values and a bar-graph representation.

What's inside

• Overview
• First Time Use
• Installation
• Operation
• Calibration
• Recording other vehicle data
• Remote display of Lambda
• Programming the LM-1
• Tips, Tricks and Troubleshooting
• Advanced Topics

Specifications

Frequently asked questions

What is the recommended mounting position for the sensor on catalytic vehicles?

The bung must be installed in the exhaust pipe at the side or on top, NOT on the bottom, with the best position being between 10:00 and 2:00.

Can I use the oxygen sensor without connecting it to a power source?

No, an un-powered oxygen sensor will be quickly damaged when exposed to hot exhaust gases.

How long does the warm-up period last for a cold sensor?

The warm-up period will last for about 30 seconds, depending on the sensor type used.

What is the maximum temperature the sensor should reach?

The maximum temperature of the sensor at the bung should not exceed 500 °C or 900 °F.