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I’ve had good luck tuning my motorcycle with an Air Fuel Ratio Gauge. I searched for information on installing one in my Tiger which has a 331ci bore/stroke and Edelbrock AVS2 650CFM carburetor, but no luck in finding information. So, I am sharing my install. You have 2 choices, a permanent gauge mount or a gauge you can use and remove once the tuning is done. I choose the Innovate LM-2 Basic Kit since I didn’t want to mount another gauge on my dash ($349).
First, drill a hole and weld the 02 bung on your exhaust pipe. The sensor must be installed on the top portion of the pipe. The space for the bung is not easy to find due to the lack of clearance above the tail pipe, and the sensor should be installed before the muffler and just back of the header. A good spot is just before the pipe goes through the “X” hole in the frame for the pipe to connect with the header. If you don’t want to weld a permanent bung, there is a clip available which will hold the sensor in the back opening of the tail pipe while you use the gauge; but, you may not get as good of a gas measure with the sensor at that location.
Next, install the sensor and connect the provided cable and route the cable past the transmission away from the exhaust and up the firewall. I pushed the cable through the firewall hole at the top of the left drivers side and into the car. I mounted the gauge on the passenger side windshield with the power cable inserted into the cigaret lighter. The windshield mount is available from Innovate or from other web sites. It’s important to pull the cable out of the cigaret lighter when the ignition is turned off, and it’s not a good idea to leave the sensor installed if power is not sent to the gauge (running car with gauge off-ruins the sensor).
My exhaust system is custom 2 1/4" and comes off the car in one piece so the entire system came out to weld the bung for the sensor. To get a nice weld, I took it to a muffler shop with “30 years” experience. Well, as you can see, I could have done a better job with my stick Harbor Freight welder. Oh, well, it doesn’t leak. Here are the pictures. Now I am ready to tune. Cliff
First, drill a hole and weld the 02 bung on your exhaust pipe. The sensor must be installed on the top portion of the pipe. The space for the bung is not easy to find due to the lack of clearance above the tail pipe, and the sensor should be installed before the muffler and just back of the header. A good spot is just before the pipe goes through the “X” hole in the frame for the pipe to connect with the header. If you don’t want to weld a permanent bung, there is a clip available which will hold the sensor in the back opening of the tail pipe while you use the gauge; but, you may not get as good of a gas measure with the sensor at that location.
Next, install the sensor and connect the provided cable and route the cable past the transmission away from the exhaust and up the firewall. I pushed the cable through the firewall hole at the top of the left drivers side and into the car. I mounted the gauge on the passenger side windshield with the power cable inserted into the cigaret lighter. The windshield mount is available from Innovate or from other web sites. It’s important to pull the cable out of the cigaret lighter when the ignition is turned off, and it’s not a good idea to leave the sensor installed if power is not sent to the gauge (running car with gauge off-ruins the sensor).
My exhaust system is custom 2 1/4" and comes off the car in one piece so the entire system came out to weld the bung for the sensor. To get a nice weld, I took it to a muffler shop with “30 years” experience. Well, as you can see, I could have done a better job with my stick Harbor Freight welder. Oh, well, it doesn’t leak. Here are the pictures. Now I am ready to tune. Cliff