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Old 01-06-2014, 10:52 AM   #1
Boltjackson
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Obx manifold and afr sensor

So I ordered an exhaust manifold from obx and AEM wideband from summit... Summit had way better shipping time then obx did so I have the afr gauge and sensor just wanting to know where on the header to put the sensor or if it should be after the collector anyone done this before?


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Old 01-06-2014, 03:28 PM   #2
Deesiel678
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Quote:
Originally Posted by Boltjackson View Post
So I ordered an exhaust manifold from obx and AEM wideband from summit... Summit had way better shipping time then obx did so I have the afr gauge and sensor just wanting to know where on the header to put the sensor or if it should be after the collector anyone done this before?
I haven't done this yet, but here is my understanding;

It's highly recommended that you use an OE replacement wideband such as Bosch 17276 or Denso 234-5108. The stock wideband won't reach the collector for the OBX, and the AEM doesn't use the OE connector. I suppose you could use the AEM for tuning purposes (if you dont trust the OEM wideband), but that wont negate the fact that you'd need a replacement OEM wideband in order to place it in the correct position (in the collector). Extending the wires in the OEM wideband is not recommended.


Look at this thread
http://www.focusfanatics.com/forum/showthread.php?t=306818
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Old 01-06-2014, 05:01 PM   #3
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Ty for the info I will defiantly look into this! But the AFR wideband I have to be honest is mainly for looks and an sct tune. As for secondary o2 sensor I'm going to talk tom into turning it off on the 14th when I get paid and order my sct x3 from him. Also does this mean the obx header needs to be sealed up or a plug put I to the upper part of the header where the o2 bung is?
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Old 01-06-2014, 10:41 PM   #4
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Please post impressions of the obx header and if possible a how too. If new bungs need to be added etc. Thanks!
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Old 01-10-2014, 04:02 PM   #5
Boltjackson
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Waiting on the weather to turn around at this point shop has crappy heater got OBX header and obx cat back for a ST on order also waiting on advanced to get me the o2 sensor I'll need
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Old 01-10-2014, 04:14 PM   #6
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Impression of the OBX header

Pros
Very shiny. +1 for looks

Good packaging. +1 for no damage
(Box was roughed up but
With packing material header
Was fine.)

Welds on exhaust manifold. +1 (smooth transfer welding)
Look awesome

Cons

Welds on collector look crummy. -1
(Needs to be filed or something to
Be smoother I think, just attention
To detail weld looks like they will have
No problem holding the flange!)

More to come when I put on car

This one is kind of indifferent not positive or negitivebut has one o2 bung on far passenger side exhaust runner, also has one down at the collector where I will be putting my wide band or oem wideband o2 sensor

Last edited by Boltjackson; 01-10-2014 at 04:16 PM. Reason: Autocorrect made me sound like an idiot
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