O2 extension wiring?

EnderG60 · 10-24-2015, 01:56 PM

So Ive picked up a second stock x pipe and some test headers, and am relocating the rear O2 sensor to behind the secondary cats.

I have everything ready to go but I need two 24" wiring extensions and can not for the life of me figure out which ones would work with the O2 sensors on an E92.

Can anyone point me in the right direction?

EnderG60 · 10-26-2015, 02:29 PM

anyone? I cant find anything that will fit the E92's sensors.

Im about to just splice some longer wires in there.

pbonsalb · 10-26-2015, 04:18 PM

That is what I would do. I think the same sensor was used for both front and rear 02 on some earlier model bmw like e36 328i and z3 and others and has varying length harnesses. Real oem might specify length in mm.

BPMSport · 10-26-2015, 08:28 PM

Contact ARH.. They have extensions, although they are an extremely tight fit. Worked for me though. Not sure if they sell them individual of their header systems.

EnderG60 · 10-27-2015, 06:53 AM

Just sent them an email.

Do you have the ARH system? What do you mean by a tight fit?

AdamJ39 · 10-27-2015, 07:04 PM

dont bother, just tried it on my akra, didnt work..heres some pics

AdamJ39 · 10-27-2015, 07:05 PM

also you can buy the connectors and all pins, grommets etc from bmw

-Adam

AdamJ39 · 10-27-2015, 07:16 PM

i guess i should also add that my CEL didnt trip until around 150-200miles, car is a 2008 btw

-Adam

pbonsalb · 10-27-2015, 08:28 PM

Why not just cut and splice? I have done that before with 02. Resistance won't change enough to make any difference if done right.

EnderG60 · 10-28-2015, 07:26 AM

Adam, I shot you a PM for some details. I have a feeling you might still be getting a CEL because of the high flow racing cats on your x-pipe and because you didnt use an O2 bung extension.

Quote:

Originally Posted by pbonsalb

Why not just cut and splice? I have done that before with 02. Resistance won't change enough to make any difference if done right.

Id rather have something pre-made but if I must, I must. If I can get the connectors from the dealer Ill do that.

I got a set of these that should be arriving today.
http://www.amazon.com/gp/product/B00...ilpage_o00_s01

Ill get them welded on this weekend, hopefully I can get the wiring extension figured out by then.

10-24-2015, 01:56 PM	#1
EnderG60 Private First Class 45 Rep 184 Posts Drives: 2014 M5 / 2012 M3 Join Date: Oct 2015 Location: Atlanta Ga iTrader: (0)	O2 extension wiring? So Ive picked up a second stock x pipe and some test headers, and am relocating the rear O2 sensor to behind the secondary cats. I have everything ready to go but I need two 24" wiring extensions and can not for the life of me figure out which ones would work with the O2 sensors on an E92. Can anyone point me in the right direction?
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10-26-2015, 02:29 PM	#2
EnderG60 Private First Class 45 Rep 184 Posts Drives: 2014 M5 / 2012 M3 Join Date: Oct 2015 Location: Atlanta Ga iTrader: (0)	anyone? I cant find anything that will fit the E92's sensors. Im about to just splice some longer wires in there.
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10-26-2015, 04:18 PM	#3
pbonsalb Lieutenant General 7679 Rep 13,759 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	That is what I would do. I think the same sensor was used for both front and rear 02 on some earlier model bmw like e36 328i and z3 and others and has varying length harnesses. Real oem might specify length in mm.
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10-26-2015, 08:28 PM	#4
BPMSport BimmerPost Supporting Vendor 3592 Rep 7,300 Posts Drives: 2x Harrop E90 M3, E92 M3, E39 Join Date: Apr 2008 Location: SoCal iTrader: (9) Garage List 2000 BMW M5 [0.00] 1990 BMW 735i Turbo [0.00] 2008 BMW M3 [7.50] 2015 BMW M3 [0.00] 2015 BMW M5 [0.00]	Contact ARH.. They have extensions, although they are an extremely tight fit. Worked for me though. Not sure if they sell them individual of their header systems.
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10-27-2015, 06:53 AM	#5
EnderG60 Private First Class 45 Rep 184 Posts Drives: 2014 M5 / 2012 M3 Join Date: Oct 2015 Location: Atlanta Ga iTrader: (0)	Just sent them an email. Do you have the ARH system? What do you mean by a tight fit?
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10-27-2015, 07:04 PM	#6
AdamJ39 Second Lieutenant 184 Rep 290 Posts Drives: F85 \| F80 \| F33a Join Date: Jan 2013 Location: Frederick, MD iTrader: (6)	dont bother, just tried it on my akra, didnt work..heres some pics Attached Images
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10-27-2015, 07:05 PM	#7
AdamJ39 Second Lieutenant 184 Rep 290 Posts Drives: F85 \| F80 \| F33a Join Date: Jan 2013 Location: Frederick, MD iTrader: (6)	also you can buy the connectors and all pins, grommets etc from bmw -Adam
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10-27-2015, 07:16 PM	#8
AdamJ39 Second Lieutenant 184 Rep 290 Posts Drives: F85 \| F80 \| F33a Join Date: Jan 2013 Location: Frederick, MD iTrader: (6)	i guess i should also add that my CEL didnt trip until around 150-200miles, car is a 2008 btw -Adam
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10-27-2015, 08:28 PM	#9
pbonsalb Lieutenant General 7679 Rep 13,759 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	Why not just cut and splice? I have done that before with 02. Resistance won't change enough to make any difference if done right.
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