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Marren Tools

LM-1: Digital Air/Fuel Ratio Meter Tuning an engine for maximum power previously required long trial-and-error sessions on a dynamometer. With the LM-1, precise AFR measurement allows the user to correctly adjust many variables- including carburetor jetting, fuel injection, turbo fuel curves, etc.- without long and expensive dyno sessions. The meter’s digital signal processing technology provides data on exactly how rich or lean an engine is running at any load. The LM-1’s self-calibrating circuitry also compensates for changes in temperature, altitude, and sensor condition. The instrument can sample and store the air-fuel-ratio and the other sensor data internally in operation for later analysis on a personal computer. At a sampling rate of 12 samples/second the instrument can store up to 44 minutes worth of data in non-volatile memory. The data can be downloaded to a personal computer using a standard serial port and viewed/analyzed by the included software or any standard spreadsheet program. The standard LM-1 includes a Bosch wide-band oxygen sensor and cable, cigarette-lighter adapter, serial cable for PC connection, 9V battery, exhaust bung and plug, CD and manual. The LM-1 ships with a Bosch sensor, however, it can also function with other wide-band sensors, including Honda/NTK and VW sensors.
Part # LM1 $349.00
LM-2 Digital Air/Fuel Ratio Meter with RPM Input This kit includes the LM-1 sensor plus the LMA-2 RPM Converter cable. This allows a tach signal to be logged by the LM-1. This cable also has 4 additional terminal screws to tap into and log other 0-5 V analog sensors from your vehicle.
Part # LM2 $429.00
Replacement wide band sensor for LM1 Direct replacement Bosch wide-band lambda sensor for Innovate LM1 and LC1 air fuel ratio meters.
Part # LM3737 $74.99
MoTeC PLM Air/Fuel Ratio Meter with Bosch Lambda sensor If you regularly tune engine management systems or configure fuel maps, an air/fuel ratio meter is probably one of your most important tools. MoTeC’s PLM Lambda meter is a professional-grade air/fuel ratio meter that offers a high degree of accuracy and repeatability. Features include: Able to function with a variety of fuels, including leaded or unleaded gasoline, diesel, methanol, and natural gas. Can work as a stand-alone unit or communicate with a PC with MoTeC software. Accurate to +/- 1.5%, depending on the type of oxygen sensor used. Analog 0-5 volt output makes it able to communicate with data acquisition systems, dynamometer control programs, and other systems that are not configured to measure air/fuel ratios directly. Backlit display with large, easy to read numerals. Small size (4 1/8” by 1 5/8” by 1”) and low weight (135 grams) makes it unobtrusive and easy to mount. The PLM can be ordered with either an NTK or a Bosch lambda sensor. The Bosch sensor is the less expensive choice, with excellent accuracy and a relatively long service life*. If laboratory-grade results or extreme precision are critical, the NTK offers a 1.5% improvement in accuracy over the Bosch unit.
Part # motec1 $1309.00
MoTeC PLM Air/Fuel Ratio Meter with NTK UEGO Lambda sensor If you regularly tune engine management systems or configure fuel maps, an air/fuel ratio meter is probably one of your most important tools. MoTeC’s PLM Lambda meter is a professional-grade air/fuel ratio meter that offers a high degree of accuracy and repeatability. Features include: Able to function with a variety of fuels, including leaded or unleaded gasoline, diesel, methanol, and natural gas. Can work as a stand-alone unit or communicate with a PC with MoTeC software. Accurate to +/- 1.5%, depending on the type of oxygen sensor used. Analog 0-5 volt output makes it able to communicate with data acquisition systems, dynamometer control programs, and other systems that are not configured to measure air/fuel ratios directly. Backlit display with large, easy to read numerals. Small size (4 1/8” by 1 5/8” by 1”) and low weight (135 grams) makes it unobtrusive and easy to mount. The PLM can be ordered with either an NTK or a Bosch lambda sensor. The Bosch sensor is the less expensive choice, with excellent accuracy and a relatively long service life*. If laboratory-grade results or extreme precision are critical, the NTK offers a 1.5% improvement in accuracy over the Bosch unit.
Part # motec2 $1559.00