If I install stillen headers will I be able to pass emissions? It looks like it eliminates the cats all together

 

Before ya get Stillen headers, read this:

http://forums.maxima.org/showthread.php?t=264127

To answer your question, if ya have any aftermarket headers, but leave the main cat on the car, you will pass emissions provided the car is at full operating temperature.

 

whitch cat is the main cat

 

Are the cats right off the manifolds? do I have 2 cats or 3

 

3, headers eliminate the front two....

To pass emissions, you must leave the car running for a good 30minutes to keep the cat hot before they test your car.