This is a run through of how to eliminate your o2 sensor. This mod should work on any vehicle fitted with a 4 wire o2 sensor but the wire colours will be different at the ECU end as these colours will suit a K7 GSR600. 1- Locate the o2 sensor loom (under the fuel tank on the left side it is a black 4 wire connector) by tracing it up from the exhaust catalytic converter housing. 2- Disconnect the plug and remove all wires from the ECU side plug except for the white wire with orange trace. This is the hardest part of the job as there is not alot of room and the terminals are a little hard to remove from the plug. To remove the terminals you need to bend the plastic retainer back and pull on the wires. I use a sharpened and flatened pice of stainles steel car aerial mast. A large sowing or crochet needle will also do the job. 3- Loop the orange wire with white trace and the white wire together and insulate as these wires will have battery voltage to them (these are the heater circuit wires). 4- Insulate the black wire with pink trace (this is the signal wire back to the ECU). 5- Plug the two connectors back together and start the bike to make sure the FI light does not come on. If the light is on you have done somthing wrong. The colour of the wires at the sensor end are 1x white wire (signal wire back to ECU). 2x grey wires (heater circuit wires) the ones that are looped together 1x black wire (earth wire) the one that is left pluged into the sensor Looking at the image wire 1 would be left out of the plug and the end insulated. Wires 2 & 3 would be left out of the plug looped together and insulated. Wire 4 would be left in the plug.