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Sep 20, 2015 | 09:47 AM

#21

rjolly87

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Joined: Jun 2003

Posts: 7,270

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From: Las Cruces, NM

Yes, gutted cat bad.

High flow cat good.

High flow cat cheap on ebay.

Sep 20, 2015 | 10:15 AM

#22

Mad_Coachman

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Posts like a Turbo

Joined: Dec 2003

Posts: 249

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From: Baldwin,New York

Mad_Coachman will become famous soon enough

Quote:

Originally Posted by Tech II

Just a heads up...what Mad Coachman did, won't work in all states.....in some states, where you have emission testing of exhaust gases, a gutted cat will not pass the test...

In New York all OBD2 cars just plug into the diagnostic port no "sniffers" here. Once I get my oil burning problem solved I will get a high flow cat.

Sep 20, 2015 | 01:56 PM

#23

Mike

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From: Dark Side, AZ

Lol, that'* funny that you say that.
1. A PCM can tell if the cat is there or not.
2. NYC still uses sniffers
3. Being a NYS vehicle inspector, I can tell just by tapping on a cat if its gutted or not. So stop with the bullshit and stop offering illegal advice.

Sep 21, 2015 | 10:05 PM

#24

Tech II

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From: Worcester, Ma.

Mike, explain #1?

Sep 22, 2015 | 04:51 AM

#25

Mike

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From: Dark Side, AZ

It doesn't know per se, but if its gutted or missing the PCM can tell something is wrong via the downstream O2 sensor values. This will trip a code eventually.