Exact fit! From Eastern Beaver http://tinyurl.com/ksj2lq PART# 4P090WP-MT Crazy thing is that I looked everywhere for these, then found them here, a place I frequently shop, DOH! Jim, the owner is a good dude, and a rider. He is located in Japan and I receive almost everything I order from him, in about 5 days, amazing! Bob
Nice find! I just ordered them. Once they show up I will have a reason to pull the tank and make a permanent switchable setup.
If I understand your relay set-up; it removes the signal and ground from the circuit and powers the heater wires to the lambda. I tried this today, and a few other variations, and could not get the second map loaded. I test rode between tries and am certain, by how it runs, which map is which. The only way that worked for me was to install the resistor and as I did not want to leave the sensor unheated for any length of time, I have removed the sensor, and put a bung in its place. Have you ridden the bike with the resistor and let me know, it you would, if I understand your circuit? Thanks! Bob
Here is a few things to consider... My tests have shown the ECU only checks for the PU resistor at power up or maybe engine start. If you switch the O2 sensor heater from the ECU, applying 12V continuously maybe to much heat. I my testing I have seen that the ECU modulates the heater voltage to likely control the sensor element temperature. You may need to install a current limiting resistor inline on the switched circuit to keep from over heating the sensor.
