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. Does anyone know if our cars need a dual channel one or is a single channel controller fine? if anyone has more knowledge on this one, fell free to fill us in.