I did a lot of searching but the newest ones I found that had swaped were the 04's which has the 4 cats and the o2 sensor after the cat.05 and up of course has 2 cats and the last sensor in the cat rather then in the pipe after the cat.I really wanted some of them super high flow metallic convertors but unfortunatly they don't have the bung in them for the o2 so can i just put a bung for it in the pipe after the cat or does uit really have to be in the cat?What would the purpose be of having it go right into the cat instead of after?

 

ummmmm nobody?So I am gonna have to be the test dummy?

 

Nobody?Ok,how about either just taking there cats off or gutting them?If so where did you get a mil eliminators at because I have yet to find any for 05 and up yet.

 

Well if you can wire, you can make your own for about $5, just search it on google.

 

I replaced my cats with the magnaflow high flows. The shop was gonna order the ones that have the plug for the 02 sensor in them like the stock ones but I didnt want/have time to wait with my schedule. I just deleted the error code with the edge.

 

What Magnaflow high flows did you go with, and where did you get them at?

 

So did it make a difference in the loudness?I talked to the muffler shop that did my true duals and he said it would be a waste of money because we only have the 2 cats stock instead of 4 like the older ones and it only makes a difference on the older ones.

 

Dont we have 4 cats on the newer trucks??? ive got 4 on mine

 

You do, but the 2005+ only have two, IIRC.

- NCSU

 

I removed the 2 cats on my truck and had them replaced with 2 1/4 pipe welded up. I just unplugged the rear 02 and put them in my garage. Then had Justin at VMPtuning.com turn my rear 02's off during my dyno tune session.

 

Does Florida not have an emissions inspection requirement?

- NCSU

 

nope

 

Lucky bastard!

- NCSU

 

We don't have emission testing in Michigan either but by everything I have read,these trucks don't run as good with out cats because they are designed to run with them.I don't know for sure but thats what I have been told.I really don't want to find out the hard way and end up spending more money.I bet it would be loud as hell without cats though with true duals and flows and I'd probably love it.

 

When i get home for summer Im getting high flows, should be a nice change since i have the crappy 4 factory ones.