Cat clogged?

Reply Subscribe

Thread Tools

Search this Thread

Feb 1, 2010 | 07:17 PM

71novaguy

Thread Starter

Banned

iTrader: (2)

Joined: Aug 2009

Posts: 591

Likes: 1

Cat clogged?

A while ago, I posted about exhaust flow being weak. At 2k, it felt about like what you would expect at idle. That was about a month ago. Today, i get a check engine light. Got it scanned, and it said "catalytic efficiency reduced". A P0040 i believe. I'm guessing the cat is getting clogged?

I replaced the after cat 02 sensor about 2 months ago. If thats what it is, is there a good bolt in cat set up. I planned on exhaust work anyways. From manifolds back. Any input on a good bolt in downpipes with cats, and y pipe. I'm gonna switch to mangnaflow exhaust, so look for that up for sale soon.

Feb 1, 2010 | 09:01 PM

Brandon35thSS

12 Second Club

Joined: Nov 2005

Posts: 184

Likes: 0

From: Gadsden alabama

if your not dead set on keeping stock manifolds but keeping cats,i would go for a long tube + catted y combo.

Feb 2, 2010 | 07:19 PM

71novaguy

Thread Starter

Banned

iTrader: (2)

Joined: Aug 2009

Posts: 591

Likes: 1

does that allow for the 02 sensors to be put back in stock location?

Feb 2, 2010 | 10:09 PM

00blacka4

I write checks with my mouth that my ass can't cash

iTrader: (7)

Joined: Oct 2009

Posts: 948

Likes: 0

you will have to get o2 extensions....personally id get rid of the *******...why pay extera for less power...just my .02...unless you dont have the hook up on inspection and you cant get the cats tuned out...

Feb 3, 2010 | 06:52 PM

71novaguy

Thread Starter

Banned

iTrader: (2)

Joined: Aug 2009

Posts: 591

Likes: 1

Quote:

I lie more on the side of why not keep them. You can still make tons of power and run cats. Plus, it keeps the hippies from having another excuse.

Feb 3, 2010 | 08:04 PM

brian_rs/ss

TECH Addict

Joined: Mar 2009

Posts: 2,099

Likes: 3

From: Texas/Afghanistan

just rid of them. i hate cats with a passion.

Feb 5, 2010 | 09:45 AM

WizardofDetailing

On The Tree

iTrader: (7)

Joined: Jan 2010

Posts: 128

Likes: 0

From: Cleveland

Don't let the Man tell you what to do, get rid of the cats. They suck!! LT's w/ a nice H X or Y pipe. Delete the rear 02's and if you really have too, just take apart your stock cats. and weld the outer shell to your exhaust so it looks like you still have them. There are no such things as high flow cats unless it is a straight through design.