sorry about all the posts but im finding out how different the 01 is from my 99

anyways i found out it has 3 cats...can anybody tell me about them...like theyre locations...and could i replace them with one High Flow cat and still pass smog?

 

I think the 3 cats version was California emissions but could be wrong.

 

nope, i have them here in illinois. one from each manifold, then one after the y-pipe. when i do headers im just going to do O2 simms all the way around. fastmann still sells them.

 

what are o2 simms? and my question is still kinda hanging...

 

A) O2 simms replace O2 sensors and give an "everything's OK" signal to the PCM, therefore you can completely get rid of your cats.

B) i have no idea, my emissions test consists of a computer scan and gas cap check, i dont have to do the sniffer test. i guess, once again, it sucks to live in California

 

he's saying all 2001 5.9's had 3 cats, and im pretty sure he's right. O2 simms keep the o2 sensor code from comming up and the check engine light. I would say just cut em all off and get a really good hi-flo cat and whatever other kind of custom exhaust you want. I dont know about passing smog because I dont deal with that stuff where I live. But I would say as long as your trucks running right and you have at least 1 good cat on there it should be fine.

 

why thank you sir. and california kicks *** except for the smog. so chut yur trap eh.

how do i get 2 the other cats?

 

there on the exhaust downpipes.. before the ypipe connects...

you can delete them, you only need 1 cat.. it will be fine..

the Mopar PPHs and any longtube/mid length headers deletes them..

 

anybody got a link to these o2 sims sounds like what i want

 

http://www.thefastman.com/02Simms.asp