i have an 05 neon

 

Is it narrow band or wide band? Narrow band with piggy back off your stock 02 exhaust sensor, its like 1volt. Its not really accurate and is good for a light show.

Wideband you will need a sensor bung welded into your exhaust, preferably before you cat. You will need a wideband sensor 5-9v to get accuate readings on A/F ratios.

 

If you get the one from AEM it comes with everything, bung and all, then all you need to do is run the wires from the engine compartment into the car, its all plug and play.

 

If it's narrowband and you haven't opened, return it. They are essentially and practically useless.

 

x2 get a wide band, way better and far more accurate. Never use a narrow band it tells you nothing. Like I posted I have heard nothing but great thing about the AEM one , I have one on my SRT.