Originally Posted by 2000GTP

I was thinking about that, but then you would need some cats. in there as well. I am running mini-cats in my Pacesetter off-road pipe and I really wonder how efficient they are. I could take the chance and weld in bungs and put in the rear 02s, but then I'm afraid I will get an SES light and be back at square 1. Therefore, I have the cats. on there for a visual inspection and 02 sims. on there to keep the PCM happy.