aem uego

See pic below. I currently have my wideband sensor plugged in location 1. That pipe connects to the rear manifold which then connects to the hot side of the turbo. My question is: Is my sensor in the wrong location? I thought that the sensor was supposed to be plugged in right on the downpipe...

Sort of a quick question on this subject. I'm doing some research for winter parts to buy for the car. The next few things on the list are a wideband O2 sensor and a new engine management system. Anyways, the question is when looking at AEM's website. It has a single and dual channel controller...