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MODIFICATIONS => Performance => Topic started by: Tooky on March 07, 2006, 02:25:09 PM

Title: Wideband O2 Sensor Location?
Post by: Tooky on March 07, 2006, 02:25:09 PM
Has anyone installed a Wideband on their TGP?  I read that flybynite has done it.  Where did you locate the sensor?  

The TGP has the very unusual O2 mounting location of being cast DIRECTLY INTO the turbine housing INLET (so bizarre), that orifice is so small I can't imagine why they'd jam a sensor element in there to boot, but I digress..

I'm installing a PLX M-300 which has a feature to replace the narrow band sensor as well as performing Wideband duties.  I've used this same unit on my Syclone and it works as advertised.  Therefore, I'll be replacing the stock O2 sensor with the Wideband.

Wideband literature (http://www.plxdevices.com/InstallationInstructions/M-200_250_300UsersGuide.pdf) says not to expose the sensor to high temperatures and that it should be a fair distance from the turbocharger outlet on the downpipe.  

QuoteMount the wideband oxygen sensor before the catalytic converter and at least 24 inches downstream from your engine block or turbo for optimal performance. The sensor element will fail if it is exposed to exhaust gas temperatures above 850 deg Celsius.

Putting it right in that stock turbo bung seems to violate that rule heinously, as it's probably the hottest spot on the engine.  What are the chances it will kill my $70 Bosch LSU4.2 wideband sensor if I put it there?

I'd like to make a proper bung in the downpipe like Jud did but it looks damn near impossible with the ABS and Cruise right there (probably why GM relocated it).  Thanks guys,
Title: Wideband O2 Sensor Location?
Post by: sleeperred90tgp on March 07, 2006, 03:36:12 PM
Josh, I did it with the DP in the car,  :) although the turbo was off and the CCmoved out of the way. Used a rag in the DP to keep the chips out of the converter.

It calls for a .6496 hole. I used a 5/8 drill (.625) and of course the 18mmx1.5 tap.

Don't know how hot it gets there :?:
Good luck.

Jud
Title: Wideband O2 Sensor Location?
Post by: flybynite on March 07, 2006, 03:45:45 PM
I welded a bung a few inches before the cat.Works just fine there although its a bitch to get to.If I had to do it all over I would ditch the cat and weld a pice of pipe in there and add a bung before welding it back up.I swap my wb from car to car all the time and I am guilty of useing my wb in the stock location(never had any problems) but after reading ur thread I will not be using the stock location anymore. :oops: Good luck with ur install      Later
Title: Wideband O2 Sensor Location?
Post by: Invasion1 on March 07, 2006, 03:53:34 PM
Quote from: sleeperred90tgpJosh, I did it with the DP in the car,  :) although the turbo was off and the CCmoved out of the way. Used a rag in the DP to keep the chips out of the converter.

It calls for a .6496 hole. I used a 5/8 drill (.625) and of course the 18mmx1.5 tap.

Don't know how hot it gets there :?:
Good luck.

Jud

Got a Picture of that Jud??

i would like to see the location  :)
Title: Wideband O2 Sensor Location?
Post by: Tooky on March 07, 2006, 04:10:10 PM
Quote from: flybyniteI swap my wb from car to car all the time and I am guilty of useing my wb in the stock location(never had any problems) but after reading ur thread I will not be using the stock location anymore. :oops: Good luck with ur install      Later
How can you swap a WB from car to car easily?  I'm having a heck of a time with all the wiring and connectors and finding places to run them through the firewall/ecm/switched 12V power, etc.  Once this thing is installed I can't imagine ever pulling it all out.
Title: Wideband O2 Sensor Location?
Post by: sleeperred90tgp on March 07, 2006, 04:30:57 PM
Yea Dave, got one some where. Ill see If I can find it.

Jud
Title: Wideband O2 Sensor Location?
Post by: sleeperred90tgp on March 07, 2006, 05:17:02 PM
Quote from: TookyCat
Quote from: flybyniteI swap my wb from car to car all the time and I am guilty of useing my wb in the stock location(never had any problems) but after reading ur thread I will not be using the stock location anymore. :oops: Good luck with ur install      Later
How can you swap a WB from car to car easily?  I'm having a heck of a time with all the wiring and connectors and finding places to run them through the firewall/ecm/switched 12V power, etc.  Once this thing is installed I can't imagine ever pulling it all out.

Ha, Josh thats why I took the 4 wire 02 off with all the crap I have on the car my under dash looks like a cluster f***.

Dave here's a couple pictures. The CC is from a 91 or 92 and is much smaller giving more room for the longer 02's. If I was doing it again I would move the hole up. This hole is right behind the exducer, but I don't think it makes any difference where you put it.

(http://img.photobucket.com/albums/v297/sleeperred90tgp/GT3076/IMG_0024.jpg)

(http://img.photobucket.com/albums/v297/sleeperred90tgp/GT3076/02Mounting.jpg)

Jud
Title: Wideband O2 Sensor Location?
Post by: Invasion1 on March 07, 2006, 05:24:03 PM
thanks Jud

I was thinking of the same location since there is a nice flat spot there and all  :)

thats some engine bay you have  :wink:
Title: Wideband O2 Sensor Location?
Post by: sleeperred90tgp on March 07, 2006, 07:47:27 PM
Thanks Dave.  :) Thought you guys had seen the engin bay before. Ive got better pictures somewhere.

Seems like the 3500 UIM is working.  :wink: Trying to get together my last drag strip runs. Will post soon.

Haven't fallen down any stairs lately caus I don't go down them. :lol:  :lol:

Jud
Title: Wideband O2 Sensor Location?
Post by: TGPilot on March 07, 2006, 08:38:37 PM
Jud...Is that the big mamma turbo??? :shock:
Title: Wideband O2 Sensor Location?
Post by: Invasion1 on March 07, 2006, 08:56:02 PM
Jud Rules!!!!! 8)

thats a badazz powerplant even if it has a automatic  :wink:
Title: Wideband O2 Sensor Location?
Post by: sleeperred90tgp on March 07, 2006, 09:19:59 PM
Yea Kenny thats the big turbo in the first picture, Gt28 in 2nd picture. Just starting to get a handle on it. For a while there I thought I bit of more than I could chew. It.s also the 3500 manifold.

Dave I don't rule anything. The frigging cat rules. next the dog and finally the wife. I have just been fortunate to be able to spend a few $$ with lots of time to get this thing running.  Man I love being retired. :D

As far as automatics, If i can't wind 6500 and leave my foot on the floor to shift I'll stick with the auto. Although this auto is on it's last legs.
Thanks for the kudos.

Thanks for your effort on this board. It seems like it has picked up since you have become a mod. You to Kenny and Luke. You guys are doing a good job. And Kenny I agree with your last post on the other forum.

Just posted my last time at the track in Proformance. Move it if you need to.

Jud
Title: Wideband O2 Sensor Location?
Post by: flybynite on March 08, 2006, 07:17:56 AM
Quote from: TookyCat
Quote from: flybyniteI swap my wb from car to car all the time and I am guilty of useing my wb in the stock location(never had any problems) but after reading ur thread I will not be using the stock location anymore. :oops: Good luck with ur install      Later
How can you swap a WB from car to car easily?  I'm having a heck of a time with all the wiring and connectors and finding places to run them through the firewall/ecm/switched 12V power, etc.  Once this thing is installed I can't imagine ever pulling it all out.
Yea man ur right IT ANIT EASY,although I have a few things goin for me.I have done it many,many times and I have PLENTY of time on my hands to play with this stuff.Anyways once all the wires are ran it's a plug and play type thing,not to bad.Jud thats one sweet enging compartment :worship: Later
Title: Re: Wideband O2 Sensor Location?
Post by: Invasion1 on March 15, 2006, 05:16:22 PM
Perhaps a stupid question but im feeling a bit stupid today.....

Can you run the car off of a WB O2 alone?

as well as using it as a tuning tool?

i have read up on them today and now find myself more confused

Title: Re: Wideband O2 Sensor Location?
Post by: flybynite on March 16, 2006, 06:10:54 AM
Yes  ;)
Title: Re: Wideband O2 Sensor Location?
Post by: Invasion1 on March 16, 2006, 12:11:12 PM
finally a simple answer....

thank you for that  :icon_biggrin:

Title: Re: Wideband O2 Sensor Location?
Post by: twinturbosedan on March 16, 2006, 03:12:20 PM
the ECM can actually read wideband signal to control the engine in closed loop?  i was under the impression you'd have to use a NBO2 sensor for the ECM and the WBO2 would only be used for a guage and/or datalogging.

any modification to the chip needed to do this?
Title: Re: Wideband O2 Sensor Location?
Post by: Jeff M on March 17, 2006, 02:12:45 PM
Many of these wide bands have a 0-1 volt output too, that will make any ECM happier then ever :icon_biggrin:

Ummm, silly :icon_rolleyes:, silly :icon_lol:, I have had these for a while:

Item# WB-768

Jeff M
Title: Re: Wideband O2 Sensor Location?
Post by: twinturbosedan on March 17, 2006, 02:36:36 PM
learn something new everyday!  thanks flybynite and Jeff :icon_biggrin:
Title: Re: Wideband O2 Sensor Location?
Post by: Invasion1 on March 17, 2006, 02:37:52 PM
Quote from: TurboSedan on March 17, 2006, 02:36:36 PM
learn something new everyday!  thanks flybynite and Jeff :icon_biggrin:

Same Here!  :icon_biggrin:
Title: Re: Wideband O2 Sensor Location?
Post by: Jeff M on March 17, 2006, 03:02:09 PM
Quote from: Jeff M on March 17, 2006, 02:12:45 PM
Many of these wide bands have a 0-1 volt output too, that will make any ECM happier then ever :icon_biggrin:

Ummm, silly :icon_rolleyes:, silly :icon_lol:, I have had these for a while:

Item# WB-768

Jeff M

Here is that part, its in the front there.  In the background that little compressor wheel on the right is stock TGP, other one is an upgrade, or stock now  :icon_twisted: :icon_lol:

http://www.turbograndprix.com/TSTE005.jpg


Jeff M