I am just about to order the Jackpot 2-1-2 exhaust and am thinking about changing my Lambda sensors with 16000 miles as it seems worth doing while the exhaust is off.

My bike is a 2009 Roadking with the larger sensors up near the exhaust port, and my questions are these:

Why did HD change the location and size of the sensors.

Is the new location of the sensor better.

Are the new smaller sensors better.

The Jackpot has bungs for both sensors so will my ECU be able to read the newer sensors in the new location further down the exhaust line.

My thinking is that both new and old sensors are unheated (although this is an assumption and may be incorrect), so fitting nearer the exhaust port will warm them to operating temp faster and they are less likely to be influenced by gasses from the opposing cylinder. But if this thinking is correct I cant see why HD chose to move the location of the sensor. Of course if the newer sensors are self heating, this explains why they have been moved to a slightly less stressful area in the exhaust, and why they can afford to be a little smaller.

Thanks in advance for any replies.

Paul