exhaust question

[Mike Morales]

hey everyone, I'm new to the site. I want to do the exhaust on my 01. I did a search on the site and read up on some pst but I am still alittle undecided on what to do? Do i need to leave all those cats in the system and just add the muffler and a high flow cat or should I just eliminate a couple of the cats or what?

 

[Todd Z]

Mike, First what are the LAWS in your state about cats???



For best performance you do need some cats on the truck...

You can get the y-pipe which removes the front 2 cats, and then replace the back 2 cats with 1 high flow... Depending which muffler and dual or single exhaust you get it can be real loud or have a happy medium...

Todd Z

 

[Dallas Starr]

is there any problems with the o2 sensors with that set up

 

[brandon mena]

[Broken External Image]:



Single 2.5" in dual 2" out Flowmaster 40 delta series. Eliminated last cat. 2 12" Stainless Steel slant-cut tips. Sounds nice and mean and dosen't loose any power, actually gained some.

 

[Todd Z]

Big D. I know there is no issue with the sensors with the y-pipe, Do not know with the single cat. I have the xcal and the 02's are shut off..

Todd Z

 

[Mike Morales]

Thanks Todd, that was kinda the setup I was thinking about. How do I go about turning off the back o2's so I don't trigger my check engine light?

 

[Todd Z]

Mike only way IS getting a XCal2 or chip to do this... Can run 200-400 bucks, But the XCal2 gives you performance gains also..

Todd Z