I got the one that goes with the uego controller before and for some odd reason(probably with my wiring)it fried the controller. The one that is used with the controller doesn't have any harnesses that can be plugged into the back of the gauge, it just have a harness already built into the back of the gauge. I got the 6-1 AEM wideband now and I love it. I think the cheapest I found the bosch sensor was at cardomain, but not sure.
