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  #1  
Old 09-26-2019, 04:20 PM
TheBigAndy TheBigAndy is offline
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Default Catalytic converter simulator

This post might get me a little bit of flack from some of the liberals here, but Iím going to ask anyway.
I have removed my catalytic converter, for multiple reasons, but, my question is, is there something I can add to my exhaust to simulate having a catalytic converter so that my check engine light will not be on for the O2 sensor?


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Old 11-18-2019, 03:45 PM
DrW0392 DrW0392 is offline
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Default Re: Catalytic converter simulator

I was wanting to delete the cats on my 99 4L 4x4 and was wondering the same thing. I have the Torque Pro app and a BT OBDII, I wonder if you can turn that light off using Torque (or tuning softwate)?
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Old 11-18-2019, 04:53 PM
sgtsandman sgtsandman is offline
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Default Re: Catalytic converter simulator

If I remember correctly, a stand off fitting that pulls the sensor out of the exhaust stream does the trick but you have to have a bung in the exhaust pipe for that to work. I know they used to be out there but since I'm subject to emissions testing, never looked into the details.


I've never seen another solution for this other than the above mentioned method.
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  #4  
Old 01-06-2020, 06:39 AM
dvrich dvrich is offline
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Default Re: Catalytic converter simulator

Quote:
Originally Posted by TheBigAndy View Post
This post might get me a little bit of flack from some of the liberals here, but Iím going to ask anyway.
I have removed my catalytic converter, for multiple reasons, but, my question is, is there something I can add to my exhaust to simulate having a catalytic converter so that my check engine light will not be on for the O2 sensor?


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Removing catalytic converters is illegal whether you are left or right leaning politically. Ask mommy and daddy for money so you can fix it properly.
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Last edited by dvrich; 01-08-2020 at 08:54 AM.
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  #5  
Old 01-09-2020, 09:50 PM
Undrstm8ed Undrstm8ed is offline
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Default Re: Catalytic converter simulator

Quote:
Originally Posted by dvrich View Post
Removing catalytic converters is illegal whether you are left or right leaning politically. Ask mommy and daddy for money so you can fix it properly.

What page in the Statism handbook is that one on? lol

Funny how in the legal dictionary's; whether Bouvier's, Blacks Law, or others you can find the word "illegal" but not "legal".. Guess they don't want to open up that can of worms eh?

Considering that in most STATES, anything at 25 years plus is considered emissions exempt and most new cars being at the least 2-4 times ahead of the current standards in place even for California emission's standards.

"U.S. approach to regulating fuel economy and emissions.

According to the notice,
1. The EPA administrator determined that the EPA based its current standards on information that is now outdated, and that more recent data suggests the current standards may be too stringent.
2. The EPA is withdrawing the previous final determination that was issued by the agency on January 12, 2017 (eight days before President Donald Trump took office).
3. The agency will initiate a notice and comment rulemaking to further consider appropriate standards for model years 2022-2025."

https://www.industryweek.com/the-eco...ions-standards


"In-Use Passenger Car Emissions

The in-use emissions from passenger cars exceed the new car standards mandated by law. Nonetheless, emissions continue to decrease in spite of high tampering rates and fuel switching (that is, using leaded fuel in engines developed to run on unleaded fuel). From field surveys in 14 cities, Greco (1985) found the overall tampering rates and catalyst tampering rates shown in figure 4.

Figure 4.. Overall and catalyst tampering rates by vehicle model year, based on 1984 survey.
Figure 4.

Overall and catalyst tampering rates by vehicle model year, based on 1984 survey. (Adapted from Greco 1985.)

Figure 5 shows EPA emission factors data as analyzed by General Motors Corp. (1985a). The measured emission concentrations for various model years are compared to the standards that were in effect during those years. The measured NO x concentrations follow the standards fairly well. Although the measured HC and CO concentrations are higher than the standards, the difference between the actual emissions and the standards appears to be narrowing (although the ratio is not decreasing) as improved technology, more frequent inspection and maintenance, and better training of mechanics has occurred. Even though the overall trend of emissions is down, a few vehicles have high emission levels, as shown in figure 6, probably because of electronic problems rather than catalyst removal or misfueling problems."

Follow link to see Figures 4-6

https://www.ncbi.nlm.nih.gov/books/NBK218144/


My point being, WHY so concerned and serious over vehicles that are exceeding current standards while all of the older vehicles go unmeasured and have even less emissions equipment let alone standards.

Love your raw application of wit and hammering down the forum noobs and even old dogs but realistically, cant back you up on this one. Besides, on every V-block engine, why is the EGR valve only on one bank of the engine? How does it monitor flow on the other side to balance or equal out EGR values?

Hmmmmmm???



As for the O/P -- https://www.3si.org/threads/the-resi...h-pics.382054/
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  #6  
Old 01-11-2020, 06:43 AM
crazymike crazymike is offline
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Default Re: Catalytic converter simulator

It is a violation of federal law to remove and bypass cats even if your home state tests emissions or not.
Understated, driving 100 mph in a 45 is still illegal whether you get caught or not.
I would think that bypassing cats would throw a check engine light.

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Quote:
Originally Posted by dvrich View Post
Removing catalytic converters is illegal whether you are left or right leaning politically. Ask mommy and daddy for money so you can fix it properly.

People can disagree without bashing each other.
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