Stock Cat Mod

Super Werty · 10-01-2014, 06:45 PM

Heads---->stock exhaust manifolds--->AFR sensors--->cats---->rear 02 sensors---->muffler

so removing part of the cat will throw a code because the rear 02 will think the cat is damaged

Not sure how you are going to remove just part of the cat either without tearing the whole thing up...and for little to zero gain. Just get test pipes and a tune

2012z · 10-01-2014, 06:52 PM

Quote:

Originally Posted by Super Werty

Heads---->stock exhaust manifolds--->AFR sensors--->cats---->rear 02 sensors---->muffler

so removing part of the cat will throw a code because the rear 02 will think the cat is damaged

Not sure how you are going to remove just part of the cat either without tearing the whole thing up...and for little to zero gain. Just get test pipes and a tune

The stock cat has a separate 2nd cell AFTER the rear o2 sensor that is not monitored. That's what I am questioning to remove...if it was monitored it would have 3 sensors per back if that makes sense..

Super Werty · 10-01-2014, 10:50 PM

Quote:

Originally Posted by 2012z

The stock cat has a separate 2nd cell AFTER the rear o2 sensor that is not monitored. That's what I am questioning to remove...if it was monitored it would have 3 sensors per back if that makes sense..

I had to go back and look at some pictures. I see what you are talking about. And yes that "second cell" would not be monitored by the rear 02.

But IMHO there can't be much to gain here.

2012z · 10-02-2014, 07:29 PM

Quote:

Originally Posted by Super Werty

I had to go back and look at some pictures. I see what you are talking about. And yes that "second cell" would not be monitored by the rear 02.

But IMHO there can't be much to gain here.

Thank you for the response. Yeah I am not sure either how restricting it is....there is some...but 1-5 hp ? probably not worth the effort...lol.. thanks man.

10-01-2014, 06:45 PM	#1 (permalink)
Super Werty Track Member Join Date: Jul 2013 Location: AZ Posts: 668 Drives: '13 Sport Rep Power: 14	Heads---->stock exhaust manifolds--->AFR sensors--->cats---->rear 02 sensors---->muffler so removing part of the cat will throw a code because the rear 02 will think the cat is damaged Not sure how you are going to remove just part of the cat either without tearing the whole thing up...and for little to zero gain. Just get test pipes and a tune Jordo! likes this. __________________ The Build

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