Hi,

I'm considering getting a Cattman y-pipe to replace my precat. If I leave everything else in the exhaust stock, will the sound change at all?

Thanks.

 

yes...you will have a deeper growl under acceleration. check the exhaust sticky for sound clips.

 

I couldn't find just a y-pipe sound in the sticky. There were too many combos.

 

i cant find the clip of my 00 with just a y-pipe but is was loud (in a good way). nice subtle deep sound while cruising and a deep growl under WOT

 

I'll get one for you...give me a day or two

 

it will be louder. i like it!

 

Just ran down and recorded a quick clip...check it.

http://picasaweb.google.com/Pritesh....27782480386402

 

the good sound really comes under load

 

FYI, Once I get my headers, I will have one available to sale.

 

wont work on his car

 

Yeah, I over looked that, thanks.

 

It will change slightly, as already noted by others.

Btw, which pre-cat is bad? Your 2001 should be Cali spec and only the rear precat is in the y-pipe. The front precat is between the front exhaust manifold and the y-pipe, so replacing the y-pipe won't do anything to help that.

See diagram below:

 

I don't know. This is exactly where I need your expertise. I'm pulling the P0420 code. I thought this pointed to the precat (the one towards the front of the car). So I figured rather than buying a new precat for $460 I could just buy the y-pipe for $350, which I thought replaces the precat. Do I have this right? I wish someone could clarify this for me. Thanks.

 

You should be fine then. The code P0420 is for Bank 1, which is the rear bank. The Bank 1 precat is the one on the y-pipe, so a replacement y-pipe should solve your problem.

 

Thanks for the clip!!