O2 sensors

Socket · 02-28-2016, 07:59 AM

I'm sure this question has been answered before but does anyone have the part numbers and a link to buy both O2 sensors for a 2008 E92?

How hard are they to install?

iliketurtl3s · 02-28-2016, 02:42 PM

Pre or post cat sox?

DR-JEKL · 02-28-2016, 03:08 PM

Bosch 17098 x 2 for the precat sensors, cant help you where the best place is to buy but i recall someone posting a link to amazon with cheap prices.

Socket · 02-28-2016, 03:26 PM

Quote:

Originally Posted by iliketurtl3s

Pre or post cat sox?

Both mate

Socket · 02-28-2016, 03:27 PM

Quote:

Originally Posted by DR-JEKL

Bosch 17098 x 2 for the precat sensors, cant help you where the best place is to buy but i recall someone posting a link to amazon with cheap prices.

Thanks DrJ

harms · 02-28-2016, 03:31 PM

Quote:

Originally Posted by DR-JEKL

Bosch 17098 x 2 for the precat sensors, cant help you where the best place is to buy but i recall someone posting a link to amazon with cheap prices.

Realoem is your friend

http://www.realoem.com/bmw/enUS/show...diagId=18_0686

BMW part numbers :
11787558055
11787558087

If you get stuck for the 2nd one (x87) then you can order 2 of the longer one (x55) and just have 200mm of excess cable. But just don't get them mixed up as they'll be the same colour.

Late last year I still found FCP + postage cheaper than Bosch direct. I ended up getting 1x genuine BMW and 1x Bosch as they didn't have 2 cheaper Bosch's in stock. Still was cheaper.

In terms of difficulty to do - it's a bit fiddly but definitely easier than doing downpipes. There just isn't much room in there to undo the sensors from the DP. You'll need an o2 sensor tool, or like I did, cut a 22mm spanner in half. You can borrow my cut spanner if you like.

Remove engine cover.
Remove underneath cover.
Remove steering rack bolts, and pull steering rack down.
Undo old o2 sensors. Unclip from the top.
Feed new ones in from the top, do one first. Don't clip in at the top yet.
Do up o2 sensor into DP. Then unwind the cable as it will have spun around while doing up the end. Then clip in at the top. Repeat for second o2 sensor.

Socket · 02-28-2016, 03:40 PM

Quote:

Originally Posted by harms

Realoem is your friend

http://www.realoem.com/bmw/enUS/show...diagId=18_0686

BMW part numbers :
11787558055
11787558087

If you get stuck for the 2nd one (x87) then you can order 2 of the longer one (x55) and just have 200mm of excess cable. But just don't get them mixed up as they'll be the same colour.

Late last year I still found FCP + postage cheaper than Bosch direct. I ended up getting 1x genuine BMW and 1x Bosch as they didn't have 2 cheaper Bosch's in stock. Still was cheaper.

In terms of difficulty to do - it's a bit fiddly but definitely easier than doing downpipes. There just isn't much room in there to undo the sensors from the DP. You'll need an o2 sensor tool, or like I did, cut a 22mm spanner in half. You can borrow my cut spanner if you like.

Remove engine cover.
Remove underneath cover.
Remove steering rack bolts, and pull steering rack down.
Undo old o2 sensors. Unclip from the top.
Feed new ones in from the top, do one first. Don't clip in at the top yet.
Do up o2 sensor into DP. Then unwind the cable as it will have spun around while doing up the end. Then clip in at the top. Repeat for second o2 sensor.

Awesome Harmsy thanks for the write up mate. Sounds like a tricky job.

JASE335 · 02-28-2016, 04:14 PM

Here is a handy step by step video.

iliketurtl3s · 02-28-2016, 04:58 PM

I have the tool if u want sox.

Pelicn · 02-28-2016, 07:11 PM

I just bought one off ebay from germany and they came really quick in 4 days,

http://www.ebay.com.au/itm/0-258-017...UAAOSwEeFU~vbG

I bought the other one at Supercheap Auto which was only around $210

DR-JEKL · 02-28-2016, 07:43 PM

This one is about 183 AUD delivered

http://www.ebay.com/itm/Bosch-17098-...BWvgkQ&vxp=mtr

E85 335 · 02-29-2016, 03:39 AM

Thought I would also jump in and say that from my experience so far I tried walker O2 sensors and they are crap. I will only go OEM for them as they are better and last way longer but hey thats my opinion so far even though they cost more..

bradsm87 · 02-29-2016, 04:29 AM

Quote:

Originally Posted by Socket

Both mate

The only purpose of post-cat sensors is to check that the cats are working. ALL tunes that I know of have the post-cat O2 sensors effectively disabled for use with catless downpipes without errors. Only the pre-cat sensors are used for AFR measurement purposes. If it's for your car, you can save some good $ by only replacing the pre-cat sensors.

DR-JEKL · 02-29-2016, 04:33 AM

Quote:

Originally Posted by DAT335

Thought I would also jump in and say that from my experience so far I tried walker O2 sensors and they are crap. I will only go OEM for them as they are better and last way longer but hey thats my opinion so far even though they cost more..

Bosch manufacture them for bmw

FWIW the ST guys use NTK widebands are they're supposedly more reliable than the oem/bosch widebands.

Socket · 02-29-2016, 05:04 AM

Thanks for the feedback guys, looks like ill start with the precat sensors and see if it fixes the surging problem, given the only code that comes up is the O2

bradsm87 · 02-29-2016, 05:13 AM

Quote:

Originally Posted by Socket

Thanks for the feedback guys, looks like ill start with the precat sensors and see if it fixes the surging problem, given the only code that comes up is the O2

The code should be specific to one O2 sensor. Make sure it's not a random post-cat O2 sensor error due to running no cats, which can be ignored or coded out. O2 sensors will not fix surge.

I'm just gonna leave this here... (start around half way down the first post)

http://www.e30tech.com/forum/showthread.php?t=102209

The small change from unpainted to white was not enough. Please please please try the black spring! The surge fix is aaalll in the spring!

Socket · 02-29-2016, 05:24 AM

Quote:

Originally Posted by bradsm87

The code should be specific to one O2 sensor. Make sure it's not a random post-cat O2 sensor due to running no cats.

I'm just gonna leave this here...

http://www.e30tech.com/forum/showthread.php?t=102209

The small change from unpainted to white was not enough. Please please please try the black spring! The surge fix is aaaal in the spring!

Brad you are a legend, Im on it mate

After buying a white and an unpainted spring at $100+ each there was no improvement at all but not giving up yet lol

This is what I wrote to Tial

HI
Where can I buy a black spring for the Q 50mm BOV
Do you have an online shop or do I have to buy from a local stockist
Im in Melb Australia
Thanks

And this was their response

From: TiAL Sport [mailto:contact@tialsport.com]
Sent: Tuesday, February 16, 2016 9:14 AM
To: sales@tialsport.com
Subject: Contact email (www.tialsport.com)

Pam Wilkins <pam@tialsport.com>
To 'Phil'
Feb 17 at 8:57 AM

You can contact one of our distributors in Australia .

G.C.G. Turbos Condell Park NSW 1300-887-267

MTQ Salisbury 61-8-8347-2290

Powertune Australia Fairfield East NSW 02-9724-0606

VPW Epping Victoria 03-8405-9281

Hope this helps someone who might be trying to find where to buy Tial BOV springs
BTW I have two slightly used springs if anyone wants to make an offer lel

bradsm87 · 02-29-2016, 05:29 AM

Yeah damn that pricing sucks. Car life would be so easy in the US! You bought both white and unpainted? Doesn't the unpainted spring come included with the BOV?

Socket · 02-29-2016, 05:55 AM

Quote:

Originally Posted by bradsm87

Yeah damn that pricing sucks. Car life would be so easy in the US! You bought both white and unpainted? Doesn't the unpainted spring come included with the BOV?

_ink · 02-29-2016, 06:52 AM

Still haven't been able to swap the BOV around with a forum member mate?

Someone help a brother out!!

If that rules it out, throw the POS tial out and get a Turbosmart Raceport!!

Socket · 02-29-2016, 07:44 AM

Quote:

Originally Posted by _ink

Still haven't been able to swap the BOV around with a forum member mate?

Someone help a brother out!!

If that rules it out, throw the POS tial out and get a Turbosmart Raceport!!

Haha Ink, Ill try one more spring before taking such drastic action lel

bradsm87 · 02-29-2016, 01:51 PM

Turbosmarts also have a lot of spring pressure. I had to change to their very soft "supercharger spring" to fully get rid of part throttle flutter/surge sound on my S14.

Stock diverter valves open at 4.5psi difference between the charge pipe and intake manifold. Tial black spring is 6psi, white is 8psi, unpainted is 10psi.

If you want confirmation, chuck in the stock charge pipe with stock diverter valves venting to atmosphere.

02-28-2016, 07:59 AM	#1
Socket Lieutenant General 4634 Rep 11,945 Posts Drives: 335i Join Date: Nov 2014 Location: Australia iTrader: (4) Garage List 2008 BMW E92 [0.00]	O2 sensors I'm sure this question has been answered before but does anyone have the part numbers and a link to buy both O2 sensors for a 2008 E92? How hard are they to install?
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02-28-2016, 02:42 PM	#2
iliketurtl3s Captain 73 Rep 946 Posts Drives: BMW Join Date: Jul 2015 Location: Melbourne iTrader: (0)	Pre or post cat sox?
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02-28-2016, 03:08 PM	#3
DR-JEKL Major General 907 Rep 6,285 Posts Drives: Space Grey E92 335i 6MT Join Date: Jul 2012 Location: Newcastle Ozstraylia iTrader: (3)	Bosch 17098 x 2 for the precat sensors, cant help you where the best place is to buy but i recall someone posting a link to amazon with cheap prices.
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02-28-2016, 04:14 PM	#8
JASE335 Private 26 Rep 74 Posts Drives: 335i E90 2008 Join Date: Feb 2011 Location: Sydney iTrader: (0)	Here is a handy step by step video. __________________ 2008 (pre LCI) 335i E90 6AT Sapphire Black- MHD Wedge Custom E60 Map - Fuel It Stage 2 LPFP - Alpina Trans Flash - AFE Stage 2 Intake - RB Inlets & Outlets - Wagner Performance Intercooler - BMS catch can, RB PCV Valve - Whiteline Rear Subframe Bushings - Dunlop Sportmaxx RT - M3 219M 18" Wheels - Akebono Ceramic Pads - M3 Steering Wheel & M3 DCT Paddles - M3 LCI Novillo leather full interior
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02-28-2016, 04:58 PM	#9
iliketurtl3s Captain 73 Rep 946 Posts Drives: BMW Join Date: Jul 2015 Location: Melbourne iTrader: (0)	I have the tool if u want sox.
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02-28-2016, 07:11 PM	#10
Pelicn Private First Class 32 Rep 106 Posts Drives: Bmw 335i Join Date: Feb 2015 Location: Melbourne iTrader: (0)	I just bought one off ebay from germany and they came really quick in 4 days, http://www.ebay.com.au/itm/0-258-017...UAAOSwEeFU~vbG I bought the other one at Supercheap Auto which was only around $210
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02-28-2016, 07:43 PM	#11
DR-JEKL Major General 907 Rep 6,285 Posts Drives: Space Grey E92 335i 6MT Join Date: Jul 2012 Location: Newcastle Ozstraylia iTrader: (3)	This one is about 183 AUD delivered http://www.ebay.com/itm/Bosch-17098-...BWvgkQ&vxp=mtr
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02-29-2016, 03:39 AM	#12
E85 335 First Lieutenant 56 Rep 330 Posts Drives: BMW 2006 E92 335i Coupe Join Date: Dec 2015 Location: Gold Coast iTrader: (0)	Thought I would also jump in and say that from my experience so far I tried walker O2 sensors and they are crap. I will only go OEM for them as they are better and last way longer but hey thats my opinion so far even though they cost more.. __________________ Aussie e92 335i. Pure Stage 2 Twin Turbos, Pure Performance Motorsport's Forge Conrods and Pistons, Fuel-it Port Injection, 7.5" Step-Up intercooler, Fuel-it Stage 3 LPFP upgraded fuel lines, Tial 50mm BOV, TFT RHD Inlets, MHD Custom Wedge E70 Map, Split Second PI controller, BMS OCC, PRP Coil Kit, AR Design 3" Catless DP, Remus Dual 2.5" system with 84mm quad tips, RB PCV valve, CSF Radiator
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02-29-2016, 05:04 AM	#15
Socket Lieutenant General 4634 Rep 11,945 Posts Drives: 335i Join Date: Nov 2014 Location: Australia iTrader: (4) Garage List 2008 BMW E92 [0.00]	Thanks for the feedback guys, looks like ill start with the precat sensors and see if it fixes the surging problem, given the only code that comes up is the O2
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02-29-2016, 05:29 AM	#18
bradsm87 Lieutenant Colonel 598 Rep 1,693 Posts Drives: F25 LCI xDrive30d Join Date: Jun 2013 Location: Australia iTrader: (0)	Yeah damn that pricing sucks. Car life would be so easy in the US! You bought both white and unpainted? Doesn't the unpainted spring come included with the BOV?
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02-29-2016, 06:52 AM	#20
_ink Jedi samurai ninja turtle 628 Rep 3,021 Posts Drives: X3 M40i 2018 Join Date: May 2012 Location: Sydney, Australia iTrader: (0) Garage List 2018 X3 M40i [0.00]	Still haven't been able to swap the BOV around with a forum member mate? Someone help a brother out!! If that rules it out, throw the POS tial out and get a Turbosmart Raceport!!
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02-29-2016, 01:51 PM	#22
bradsm87 Lieutenant Colonel 598 Rep 1,693 Posts Drives: F25 LCI xDrive30d Join Date: Jun 2013 Location: Australia iTrader: (0)	Turbosmarts also have a lot of spring pressure. I had to change to their very soft "supercharger spring" to fully get rid of part throttle flutter/surge sound on my S14. Stock diverter valves open at 4.5psi difference between the charge pipe and intake manifold. Tial black spring is 6psi, white is 8psi, unpainted is 10psi. If you want confirmation, chuck in the stock charge pipe with stock diverter valves venting to atmosphere.
	Appreciate 0 Quote