HO2S removal

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Oct 16, 2007 | 04:21 PM

jstroud08

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Joined: Oct 2007

Posts: 62

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HO2S removal

I have a 92 bronco with a 351w, I have removed the cats and muffler, but it is still a fake dual, i want to know how to make it into a true dual, the muffler shop i talked to said that the oxygen sensor needs the heat from both exhaust manifolds to operate properly.
My question is What exactly will happen if i remove the HO2S altogether? I know the check engine light will come on, and the fuel/air mix will go to the preset default, but performance and MPG-wise will there be any noticable effect and how do i correct this?
I plan on getting headers soon, i don't know if this makes a differance

Oct 16, 2007 | 04:49 PM

EPNCSU2006

Lead Driver

Joined: Nov 2002

Posts: 9,557

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From: Concord, NC

Put the O2 sensor in the collector of one header. It's not ideal, but it will work fine, and is much better than running no O2 sensor at all.

Oct 17, 2007 | 09:08 AM

Conanski

FTE Legend

Joined: Jun 2006

Posts: 31,930

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From: Ottawa, Ontario

Quote:

Originally Posted by jstroud08

the muffler shop i talked to said that the oxygen sensor needs the heat from both exhaust manifolds to operate properly.

They don't know what they are talking about. I have longtubes on my truck and the O2 sensor is in the passenger side collector, it never "sees" the drivers side bank at all. Motor runs fine and gets great milage.. and it's been like this for over 7 years.

Quote:

Originally Posted by jstroud08

My question is What exactly will happen if i remove the HO2S altogether?

The CE light will come on and fuel milage will go in the tank. Don't do this.