I am finally ordering my nelson tune. My county has emissions, but the truck isn't um.... driven on the street. I want to have the rear 02s turned off so it won't throw any codes just incase I ever have to get it tested.


I am also getting a wideband gauge/sensor. Can I put this in the 'after the cat' location on the stock piping until I get my headers on, or will the cats throw off the wideband reading?