Post cat 02 sensors!

I recently purchased an 02 Turbo with an aftermarket exhaust, tune, turbos, etc. As I was doing coil packs and plugs, I noticed my car literally does not have post cat 02 sensors. This is obviously a bit concerning. I know these don't have the range of the pre-cat sensors, and on most OBD2 cars are largely to make sure the catalytic converters (my car does not have cats) are functioning properly.

My question is two fold

1.) Would a tune eliminate the need for after cat 02 sensors?

And, if that is not the case...

2.) besides, the obvious of putting them back on the car and welding a place for them, is there anything else I should be aware of?

 

They are tuned out, no big deal.

 

It could be a big deal for emissions testing in IL. They do an OBD test here and if the sensors show up "unsupported" (which is what usually happens when they are "tuned out") the car will fail since the emissions computer knows that the car is supposed to have post cat sensors.

 

Well he doesn't have cats so he isn't passing jack ****. You should have gotten a stock exhaust with the car along with access to the stock tune so you can swap back and forth to pass emissions tests. I pass even with the wrong injectors for the tune this way.

 

I passed emissions tests multiple times without cats on my 350Z. All sensors active and no codes = pass in IL. No visual inspection for cats. The easiest thing would probably be O2 simulators and turn sensors back on in ECU.

 

No sniffer test in IL?

 

Not since the early 2000s.

 

No sniffer here but they plug in and even normal inspections check for cats - and I've had them counted even when the car blew clean to a sniffer when they still used them. We do now have roadside drivethru tests that I hope to use - you just drive thru and it reads your emissions and tag. If that works I'll be DAMN happy!