Originally Posted by noxredna
The car will fail inspection the moment you remove your 2nd cats, let alone primary cats regardless of any tune.. the tune basically turns off the cell light but NY inspection has sniff test.
well that depends where and who does it. Technically it should fail, but it's only a visual inspection for secondary cats. It will not give you a CEL so most places will never know the secondaries are gone, and when they hook it up to the computer it will pass emissions and that's really all they care about.