Originally Posted by markjenn
I don't know for sure, but I doubt it. I believe the stock bike has catalysts and you almost never see a catalyst on an aftermarket system. It appears it is just four straight pipes from intake to the rear mufflers, with no provisions for catalysts or O2 sensors. The ECU would operate open loop.
With an open loop, can I still tune the bike to make more hp and torque, idle correctly, good throttle tip in, etc?
I'm also worried (naturally) about operating that part of the ECU in an open loop and having a lean out at certain rpms, load, conditions, etc. How critical is the 02 Sensor to the whole picture?