So my car is due for its first emissions test next year, and was wondering if it is possible to pass with an offroad pipe and o2 spacers. I know this one site where you can buy spacers with mini cats built in to the spacer to trick the rear o2's into thinking there are cats. http://www.bigdaddiesgarage.com/mini-cat-cel-fix.html#Mini Cat O2 Simulator Big Daddies Garage otherwise I would have to get a catted midpipe and run regular o2 spacers or a third option would be to get Kooks green x or h pipe but that would be real expensive, lol. Whats your guys' experience with this issue? I live in illinois so I only have to pass the OBDII test, there is no visual inspection. Also another concern I have is that if I bring it to a test facility with the offroad pipe installed they would be able to tell just from the smell of the exhaust that there are no cats.