PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

does anyone prefer AFR reading from the y pipe?

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Old Oct 13, 2012 | 04:39 PM
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Default does anyone prefer AFR reading from the y pipe?

i was told to get a bung in my y pipe so we could read afr there instead of at the collectors.

just wondering if anyone sees any reason for it.

everyone i know goes @ the collector. and just for my clarity, we should go from both collectors too right?
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Old Oct 13, 2012 | 08:23 PM
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Mine's in the I-pipe, where I had an additional bung
welded in for it.

It's uncommon to find a wideband that reads two
sensors. There may be one, I dunno. Not the norm.
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Old Oct 14, 2012 | 07:51 AM
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I was offered a two sensor wideband back when I ordered one. Didn't pay much attention to it and the price was higher. It would seem like the ideal way to tune something in case you had a problem with one bank, you'd never know unless you had a sensor in that bank.
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Old Oct 14, 2012 | 10:55 PM
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thanks for the replies. i could not find a thread on this. but i didnt search in depth either. the way i figure it though, your either reading off one sides cylinders or the others. it would be nice to read both and get an average. or what i thought was just go at the merge at the y pipe and do it there by putting a bung in. im glad you saw what i was talking about.
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Old Nov 8, 2012 | 09:02 PM
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fast makes a dual channel wideband...and for simple street cars the ypipe is fine
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