STS Turbo with wideband O2
Teching In
Joined: Aug 2004
Posts: 35
Likes: 0
I don't have a wideband O2, but am looking at buying one shortly. I'm looking at the LM1 from Innovate Motorsports.
Accordind to the doc for this, the bung should be installed in front of the catalytic converter. The tailpipe is an option, but it is less accurate.
http://www.innovatemotorsports.com/s...Manual_3.0.pdf
Attached is a path to the doc on this....
Accordind to the doc for this, the bung should be installed in front of the catalytic converter. The tailpipe is an option, but it is less accurate.
http://www.innovatemotorsports.com/s...Manual_3.0.pdf
Attached is a path to the doc on this....
12 Second Truck Club
Joined: Feb 2002
Posts: 5,574
Likes: 0
From: Sacramento, CA
Originally Posted by PurEvl
I have my wideband after the turbo with my STS
Originally Posted by Smoov-E
No kidding? That will be a helluva lot easier. You just put the bung in the STS tailpipe right after the turbo?
Originally Posted by Smoov-E
I don't have a wideband O2, but am looking at buying one shortly. I'm looking at the LM1 from Innovate Motorsports.
Accordind to the doc for this, the bung should be installed in front of the catalytic converter. The tailpipe is an option, but it is less accurate.
http://www.innovatemotorsports.com/s...Manual_3.0.pdf
Attached is a path to the doc on this....
Accordind to the doc for this, the bung should be installed in front of the catalytic converter. The tailpipe is an option, but it is less accurate.
http://www.innovatemotorsports.com/s...Manual_3.0.pdf
Attached is a path to the doc on this....
I have the LM-1 and i already had a Bung welded into place for WB tuning at MTI...... so i still have the one that comes with the LM-1...... wich is For sale BTW for $300. Been in the car about 500 miles and reasonf for selling is my new setup comes with one.
Kyle
Trending Topics
When we were testing the STS systems before they were even in production we learned that they are to be put on the exhaust side of the turbo as some in this thread have stated. We have had excellent success with this method.
Placing the sensor on the pressure side of the exhaust can ruin the sensor, as it is not supposed to be under pressure. Therefore, the exhaust side of the turbo is really the only place it can go
Hope that clears things up...
Placing the sensor on the pressure side of the exhaust can ruin the sensor, as it is not supposed to be under pressure. Therefore, the exhaust side of the turbo is really the only place it can go
Hope that clears things up...
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WELL I hope it can live B4 the Turbo! I called Rick (STS Rick) and asked him B4 I installed mine. I tild him what the instruction's said and asked him where he thought the right place was to install the O2. He told me anywhere after the Y pipe! I told him the instructions said to mount it after the turbo and he said NO, thats for front mounted units because of the heat. He said Anywhere after the Y pipe would be fine. I hope he was right Or I guess I will be moving it b4 too long and buying a NEW O2! That would suck! Lata, Ark
On a STS setup you will not get accurate WOT readings if the wideband is BEFORE the turbo.It has to be mounted after the Turbo! We saw a big A/F difference on Pure Evils car..Before Turbo read 12.5-1 A/F.After Turbo read 10.5-1 A/F.
WEll I gues I will have to move it and thank Rick From STS next time I talk to him?
DO any of you know where I can Find an O2 Extention wire for the Bosh O2 that came with the AEM ugo gauge? Thanks for the Help. I should Just start asking my questions hear and forget about talking to the manufacturer? What ya gona do? Thanks again Guys, Let me know about that extention if you got some info? Lata, Ark
DO any of you know where I can Find an O2 Extention wire for the Bosh O2 that came with the AEM ugo gauge? Thanks for the Help. I should Just start asking my questions hear and forget about talking to the manufacturer? What ya gona do? Thanks again Guys, Let me know about that extention if you got some info? Lata, Ark
TECH Fanatic
Joined: Nov 2001
Posts: 1,190
Likes: 0
From: Las Cruces, NM
Most wideband o2 sensors are calibrated at roughly atmospheric pressure. So putting them before a turbo where the pressure is quite a bit higher will adversely affect the accuracy. At least on most o2 sensors the pressure will not mess them up, they are just inaccurate. Some wideband setups add a pressure transducer to compensate for back pressure (emission testing, laboratory models). Of course putting the wideband o2 sensor so far back will also mean that it could be pretty inaccurate because its not hot enough.
Gary
Gary
if you put it after the turbo and you are not recombing the exhaust flow from the wastegate you aren't getting a reading from all the exhaust gas. Not sure if this would effect the reading or not.
mark
mark
Teching In
Joined: Nov 2004
Posts: 11
Likes: 0
Of course putting the wideband o2 sensor so far back will also mean that it could be pretty inaccurate because its not hot enough.
Back pressure is another matter. Pressure skews the readings towards stoichiometric. The NTK sensor has more than twice the pressure sensitivity of the Bosch sensor. The Bosch is more sensitive to temp. and therefore needs more elaborate temperature controls in the WB controller.
A waste-gate only relieves some of the pre-turbo exh. pressure and does NOT affect WB readings at all as long as it is not stuck open (acts as exh. leak introducing outside air).
Regards,
Klaus
