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Drewbox
Samba Member
Joined: April 17, 2009
Posts: 48
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 Posted: Tue Apr 16, 2024 9:09 pm Post subject: Where would be a good place to install a wide and O2 sensor? |
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I’m converting my squareback to a modern EFI system. I’m nearly done but I’m having a bit of a difficult time deciding where to install the O2 bung.
Where have other people put it before? |
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KTPhil 
Samba Member
Joined: April 06, 2006
Posts: 35871
Location: Conejo Valley, CA
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| Posted: Wed Apr 17, 2024 11:12 am Post subject: Re: Where would be a good place to install a wide and O2 sensor? |
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Stock muffler?
Right here:
This gets a good average of all four cylinders, and is upstream enough to not be biased by any outside air getting drawn in.
Clock it at 2 o'clock (above middle) to keep it dry.
It is also easily substituted for a stock resonator with just a couple of bolts/nuts.
_________________
Current Fleet:
- '71 Fastback
- '69 Westfalia
Retired:
- '67 Beetle
- '65 Beetle (x2)
- '65 Bus
- '71 Squareback |
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Bobnotch
Samba Member
Joined: July 06, 2003
Posts: 23362
Location: Kimball, Mi
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| Posted: Wed Apr 17, 2024 11:56 am Post subject: Re: Where would be a good place to install a wide and O2 sensor? |
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If you're adding one to a header/extractor system, you'll want it at the collector of the header/extractor (where the muffler bolts on) right before the muffler. Again, clock it at about 2 o'clock to keep it dry.
_________________
Bob 65 Notch S with Sunroof
71 Notch ...aka Krunchy; build pics here;
http://www.thesamba.com/vw/forum/viewtopic.php?t=249390 -been busy working
64 T-34 Ghia...aka Wolfie, under construction... http://www.thesamba.com/vw/forum/viewtopic.php?t=412120
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Drewbox
Samba Member
Joined: April 17, 2009
Posts: 48
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| Posted: Thu Apr 18, 2024 12:41 am Post subject: Re: Where would be a good place to install a wide and O2 sensor? |
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| It is a stock muffler with all the heater boxes. Thanks for the quick replies. |
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Multi69s
Samba Member
Joined: January 24, 2006
Posts: 5552
Location: Lefty, CA
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Drewbox
Samba Member
Joined: April 17, 2009
Posts: 48
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| Posted: Mon Apr 22, 2024 6:29 pm Post subject: Re: Where would be a good place to install a wide and O2 sensor? |
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| For now I’m just using the stock intake. I have been designing a new intake manifold in Fusion360 and been 3D printing prototype parts, but for now just using the stock intake to get back on the road. |
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