Sorry guys if there is a post on this already. I google searched, searched here, and nasioc to see if there was a sticky or something with good information on there about this but came up with nothing. I am getting lots of work done to my car tomorrow including dp, up, and cai being installed. I am also getting an e tune for my cobb ap but the tuner said i need a wideband. From my understanding i knownits an o2 sensor with a wider range than the stock o2s. I know this gets put into a bung after the turbo before the cats or in my case after the turbo since i am completely catless. That is all i know. I looked up online and see people wiring leds ans buttons to the front. For what? What should i expect? I have a normal mechanic shop doing this and since i have no clue how to know what they did or are going to do is right i want to know what i should look for. Also can anyone recommend a good wideband? I saw some for 80, does that sound right?