I have a 04 with test pipes and header and keep on getting the SUS light (Code P0420). I am able to clear it with with my code reader, but the light is a lil bothersome coming on every other day.
So I was wondering if a set of O2 sims would remedy the problem.
Though I am looking for input from those who have sims installed. Also how would they effect the a/f?
Thanks in advance.

 

I am actually installing a set of test pipes this Sunday and I to have a 2004.5 Z so it will probably throw the code. I will probablty buy an o2 Simulator from this website http://www.o2simulator.com/4436.html . I think this should solve your problem with the light.

 

Have you bought these yet? If so, do they work?

 

All you need to know HERE

 

Thanks a lot. The Help! version sounds so much better to me. Ill be trying this on monday or tuesday.

 

2 people that I know of have tried it, one was successful(the one in the post). The other wasn't, but I think he drilled out both of the nonfoulers on each bacnk. Just make sure you only drill out the outer of the two nonfoulers on each bank and you should be good to go.