TRo2/o2 Sensors/Rivnut Installation
- A. Make sure TRo2 is getting the proper voltage from the motorcycle. (12 volts)
- B. Wiggle the TRo2 cable that plugs in to the adapter cable, if the AFRs drop to 10 or if the lights on the TRo2 reset, then there is a connection issue.
- C. Unplug the sensors from motorcycle and let them sit out in open air, and power up motorcycle to see if the o2 sensors are heating up properly.
- D. If lights are not blinking properly on TRo2, perform free air calibration.
- E. Plug only one sensor into the motorcycle to see if you receive different AFR readings.
- F. Swap the rear sensor cable with the front sensor cable to see if the issue follows the sensor or the cable.
- G. If possible, test using different sensors.
- H. Ensure when using TR4-VCM both white and blue wires on adapter cable are nearly 5 volts (view photos below for more direction).
- I. To test white wire (sensor 1 / front sensor), use voltmeter and
insert negative to align with black wire and positive to align
with white wire on the adapter cable (view picture below).
- J. To test blue wire (sensor 2 / rear sensor), use voltmeter and
insert negative to align with black wire and positive to align with blue wire on the adapter cable (view picture below).
- K. If one of the sensors is not receiving voltage and has been determined that it is no good you can still finishing tuning the bike with one sensor. Follow the steps HERE for more information
- L. If you are using a TR3-VCM for auto-tuning, contact TechnoResearch for upgrade to TR4.
- A. The TRO2 has red status LEDs for each channel. When powered, the LEDs blink at a slow rate until the corresponding sensor has reached normal operating temperature. After installation, the TRO2requires free air calibration. This should be done with the sensors dangling in free air. The environment must be free of hydrocarbon vapors. It is suggested that the free air calibration be performed outdoors.
- B. To start the calibration, turn the free air calibration trim-pots on the TRO2 full counterclockwise.
- C. Turn on power, typically by turning the motorcycle on, and wait for 60 seconds so the sensors can heat fully.
- D. Then slowly turn each free air calibration trim-pot clockwise until the corresponding LED starts flashing at a rapid rate. Try to set each trim-pot so that its LED has just started to flash.
- A. The free air calibration procedure should be performed on first use, then at reasonable intervals (every 25-50 motorcycles) or whenever a sensor is replaced.
- A. Remove the heat shield and drill a 9 mm hole in the head pipe. Position the hole in a straight portion that is about 10-15 cm away from the exhaust port exit.
- Note): Be sure to check the position of the heat shield clamps as you DO NOT want the hole to be over a clamp mark.
- Note): If the hole position is too far from the exhaust port exit, the gases may not be measured accurately.
- Critical - make sure this location is approximately 1" to either side of the heat shield clamp.
- B. Install Rivet Nut using the hydraulic installation tool.
- Note): Follow instructions provided with the tad. Use reasonable force; you will feel when Rivet Nut is fully installed. The last pull on the handle will only go about halfway.
- D. Secure the O2 block with a wrench (or by other means) and install the O2 sensor.
- Note): If the O2 sensor is tightened without securing the block with a wrench (or by other means), there is a possibility of breaking the vented hexagon bolt.
- Note): Route the o2 leads and exhaust tubing away from exhaust, hot engine components, and rear wheel. Using zip-ties, or Velcro ties, secure o2 leads and exhaust tubing.
- E. After tuning is complete, remove Wideband sensor and adapter block. Install stainless steel button head screw and a small amount of anti seize. Reinstall heat shields.