Have a 2003 cobra I have bassani catted x pipe now and I just picked up a off road x pipe. The pipe came with all the sensor holes and everything for installation. Will my check engine light turn on with out the cats?
If your rear o2's have not been turned off in the tune, it should/will turn the light on for cat deficiency. It's pretty common to disable them though, so it's a gamble.
Pretty sure in NY your allowed to have 2 monitors off. I "Pass" inspection with the rears off. I've heard a lot of people having issues with the new inspection rules but haven't myself yet.