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Old 05-27-2019, 05:34 PM   #1
yimmortal
 
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Default Cat converter removal

2006 sprinter. Does removing the cat converter really make a big difference in power and mpg? Donít cry laws or inspections please..... 190,000 miles and doesnít go up long hills happily.
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Old 05-27-2019, 06:28 PM   #2
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Default Re: Cat converter removal

No sensor after, downstream of the CAT?
Then I would not worry.
I think only the 06 has one.
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Old 05-27-2019, 10:47 PM   #3
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Default Re: Cat converter removal

If The converter isn't damaged or plugged up, it has no effect on fuel economy. You will notice a slight improvement in power after removing it. However the exhaust will be significantly louder.
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Old 05-28-2019, 05:35 AM   #4
The Grand Tour
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Default Re: Cat converter removal

Quote:
Originally Posted by yimmortal View Post
2006 sprinter. Does removing the cat converter really make a big difference in power and mpg? Donít cry laws or inspections please..... 190,000 miles and doesnít go up long hills happily.
So if someone steals your vehicle and changes the license plates, you won't "cry laws or inspections"?
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Old 05-28-2019, 01:53 PM   #5
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Default Re: Cat converter removal

All NAS aka NAFTA OM647 T1N engines have only one O2 sensor which is mounted ahead of the catalytic converter. The NAS OM612 T1N doesn't have any O2 sensor.

I agree that unless the catalytic converter is plugged, any improvement in power or mpg will be minimal. Not you asked... best to leave it intact. Catalytic converters plugging up has not been a hot topic here on the forum. My 2004 at 328,000+ miles still has the OEM cat converter.

Quote:
Originally Posted by yimmortal View Post
... 190,000 miles and doesn’t go up long hills happily.
A bit more detail might be helpful.

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