Originally posted by dantastic
the second sensor in you cat monitors its efficiency. if you gut the cat, or remove the sensor, you're going to get a cel. you need to get one of those 02 sensor simulators to replicate the voltage of the o2 sensor to get rid of the cel
Ditto. If you want the CEL to go out, put a normal cat back on with an O2 sensor on it. You destroyed one of the biggest parts of our emissions controls, and are now wondering why the CEL(which monitors emissions controls also) was set off? Thats like asking why my tire is flat after I shoved a knife into it.
Also as far as NY laws are concerned and their strictness towards emissions, if you run a car with a gutted, or removed cat, they can confiscate your car, and you wont pass emissions testing with a CEL unless you have some connections.
Getting trick sensors, etc for what was in the end a pretty worthless mod which should have been more thoroughly researched first.