Where to install O2 sensors?

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Aug 22, 2018 | 04:13 PM

Thread Starter

Road Warrior

Joined: Nov 2005

Posts: 1,484

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From: Mountain View, California

Where to install O2 sensors?

Hey folks, I'm about to install a data logging tool to record AFR, RPM, and throttle position for my 2000 Ultra which predates factory O2 sensors so I need to weld-in bungs for aftermarket sensors, and I could use some advise.

is there a certain distance downstream from the exhaust port that they should be placed in my Thunderheaders? Of course I'll be installing one for each cylinder and they'll be wide-band.

is there anything else I should pay attention to? Angle into the head pipe, things lile that?

Thanks in advance!

Aug 22, 2018 | 07:55 PM

marcodarq

Grand HDF Member

Joined: May 2014

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From: florida

i was told by the guys at DJ that 6-9 inches from the port was a good distance, look at each pipe and visualize how much room you will have in the area that you first think about. you need room for the sensor and the wire harness, room to work with, remove for service/replacemnt(so that you dont have to remove the whole pipe). compare both this distance down the pipe and the area around the outside of the pipe so that you have a good angle.
m

Aug 23, 2018 | 11:23 AM

FLTRI17

Stellar HDF Member

Joined: Sep 2009

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Likes: 666

Also the sensors should always be mounted in a way as to keep moisture/water from draining into the delicate zirconium piece inside . Always mount sensor tip downward into the pipe.
Bob

Aug 24, 2018 | 12:47 AM

Thread Starter

Road Warrior

Joined: Nov 2005

Posts: 1,484

Likes: 82

From: Mountain View, California

Thanks for the tips

Aug 24, 2018 | 10:00 AM

bustert

Seasoned HDF Member

Joined: Aug 2008

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pm me a place to send and i can shoot over to you a efi book that may be of help.

Aug 24, 2018 | 10:31 AM

Thread Starter

Road Warrior

Joined: Nov 2005

Posts: 1,484

Likes: 82

From: Mountain View, California

Quote:

Originally Posted by bustert

pm me a place to send and i can shoot over to you a efi book that may be of help.

I'd appreciate that! Private message sent.

Last edited by Z; Aug 24, 2018 at 10:35 AM.

Aug 24, 2018 | 10:38 AM

bustert

Seasoned HDF Member

Joined: Aug 2008

Posts: 5,052

Likes: 993

you might want to edit out the email address, send it through private message, will not show up to the world. just click on my name and it should show you the option. will send it.