I'll send it out to you for the shipping. I checked everywhere on the bike but didn't find any Pc. Removed both left and right covers, seat and tank and looked around. I am familiar with the pc and cobra as I have a roadstar warrior so I know what to look for I have 1 more place to look and that's next to the battery but I doubt it's there. I did find some info on the piece you want though.
It's called an O2 Optimizer.
The system is designed to read the Oxygen sensor under certain conditions and temporarily change the air / fuel ratio. The closed loop circuit has a very limited operating range, which is only in effect while holding a steady speed at certain rpm's and throttle positions. In this limited area, the stock system (with or without the Power Commander) will gradually and temporarily lean out the air fuel ratio in an attempt to achieve an air / fuel ratio of 14.7:1 (stochiometric). The Oxygen sensors can be disconnected but this will trip the F.I. dash warning light.
Designed to read the Oxygen sensor under certain conditions and temporarily change the air / fuel ratio.At some motorcycles, you have to disconnect the O2 Sensor cable so that the engine electronics accepted the revised values from Power Commander III USB and the performance can be increased.
the PC5 include the O2 optimizer. If the stock O2 sensor is active, it would override any fuel changes made by the Power Commander in the closed loop engine range, and basically make the fueling as it would be stock in that range. The optimizer disables the stock O2 sensor, so that the Power Commander can tune the fuel curve across all RPMs and throttle positions. If your map claims it needs the O2 sensor disconnected, then they have modified the fuel mapping in the closed loop section and if you do not have the optimizer, it would benefit your application as the changes they have made will not be applied in certain sections of the map without the optimizer.
Dynojet oxygen sensor kits are used on some European motorcycles that have oxygen sensors. The kit disables the closed loop system and enables the Power Commander to adjust the fuelling in this area. (note - two required for Honda VFR800 models)
A 'closed loop clean air' system is used on some bikes to read the Oxygen sensor (lamda) located in the exhaust pipe and, under certain conditions, temporarily change the air/fuel ratio to the stochiometric value of 14.7:1. This is to provide a chemically efficient burn for low rpm cruising and to aid emissions. The closed loop circuit has a very limited operating range, which is only in effect while holding a steady speed at certain rpm's and throttle positions. Any adjustments to the Power Commander will have no effect in this area, as the bikes system re-adjusts accordingly to 14.7:1. This ratio, while good for the enviroment, creates flat spots and a lack of torgue that is required in certain instances, even in the low rpm area. The Oxygen sensors can be disconnected but this will trip the F.I. warning light on the bikes dash.