As I stated in previous pages here, early model 2005s were the last to get the 4 cat systems, anything built past January 2005 has two cats. So 3/4s of 2005s have two cats.

 

at least you can hear the idle now??? WTF????



you claimed it had a good sound at idle before?


it sounds more macho now but I still think you need to go back to flowmasters man...

 

That was before it had broken in more, I couldn't ever tell it was running with the acception of the cam phasers ticking. That wasn't a full warm start either so the idle was a bit higher than usual, at a 600rpm idle its nice and low with a slight choppy sound, not disturbing anyone, then when driven it gives a deep heavy tone out in the neighborhood. I'm very happy with it and love the clear sound.

 

sooooooooooooo my o2 sensor is RIGHT in the middle of the cat...how i delete em now?

 

Re-mount them in the new pipe.

 

so if i mount my o2 sensor into the new pipe will i have a check light?

 

Not if you mount them close enough to the cats. I would mount them on the exit pipe that is on the 94106 unit.

 

come again?

 

Sounds good man, same setup I'm doing...thank god it sounds good cause I already ordered it haha

 

You may or may not. I cannot guarantee it but you should not have any troubles.

He is talking about removing the rear cats, not a hi-flow cat swap.

 

emissions 2maor...so ima hold off on the removal XD

 

do you have any pictures of the cat on the other side? I just want to see how you did the filler pipe.

 

Sounds Awesome man! I'm still mullin over whether or not I want to do it to mine.

 

sorry for digging this up but im probably doing this soon to my 04 im just trying to figure out how to mount the pipes in there. i have a mig welder but the thing is i don't have enough room to get to the top of the pipes to weld them and you said with your clamps they're starting to leak. and i tried to ask a local shops but they're scared to death to cut out cats

 

My friend and I used pipe and slip fit adapters to make this work, each end had 1/4 to 1/2" of clearance over-top of the pipes, just had to muscle them in.

My personal best recommendation, just unbolt the downpipes off the manifolds and drop it down so you can install it easier, and guarantee yourself no leaks. I never 100% got rid of those leaks.