o2 sensor plugs???

98blackstallion

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mtn home arkansas

Jan 26, 2008

#1

• Jan 26, 2008

• #1

Hey guys anyone know what size plug I would need to block off the o2 bungs on my headers and midpipe? There all turned off so I dont need them hooks up and that way I can get the wiring mess under there straightened out. Thanks!

 

twogts4us

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Apr 1, 2004

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Dunedin, FL

Jan 26, 2008

#2

• Jan 26, 2008

• #2

Best thing to do then would be to buy bungs with caps - like this one I found with just a quick google...$8.00 bucks a pop.

http://www.diyautotune.com/catalog/innovate-motorsports-oxygen-sensor-bung-plug-3736-p-71.html

 

98blackstallion

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Jan 26, 2008

#3

• Jan 26, 2008

• #3

I already have the bungs in my midpipe and headers I just need to plug them.

 

twogts4us

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Jan 26, 2008

#4

• Jan 26, 2008

• #4

The bungs shown in the link come with caps (aka plugs). They would be a perfect fit...

 

98blackstallion

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Jan 26, 2008

#5

• Jan 26, 2008

• #5

DOH!!! Sorry man Im not all with it today lol! Thanks for the help!

 

blackfang

Founding Member

Dec 17, 2001

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Richmond, Va

Jan 26, 2008

#6

• Jan 26, 2008

• #6

98blackstallion said:

Hey guys anyone know what size plug I would need to block off the o2 bungs on my headers and midpipe? There all turned off so I dont need them hooks up and that way I can get the wiring mess under there straightened out. Thanks!

Click to expand...

How did the engine react to you turn off the ECU's ability to read A/F? That is what the front sensor is for. You can turn off the rears w/o any issue.

 

BCB00GT

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Jan 26, 2008

#7

• Jan 26, 2008

• #7

Just take the rear O2 sensor to a good local hardware store and find a female threaded nut/union and then find the corresponding male plug. A couple of the old fellas at my locally owned hardware store can tell the size and pitch by looking at a bolt.

 

98blackstallion

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Jan 26, 2008

#8

• Jan 26, 2008

• #8

blackfang said:

How did the engine react to you turn off the ECU's ability to read A/F? That is what the front sensor is for. You can turn off the rears w/o any issue.

Click to expand...

Its called running in Open Loop and it runs great! Dynospeed shut them off completely due to one of my O2's dieing on the dyno. I havent had any problems so far and I have many thousands of miles on it.

 

SaleenGT2001

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Jul 18, 2005

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Jan 26, 2008

#9

• Jan 26, 2008

• #9

its not good to turn off the front o2's. you better hope the tune is dead on and it can somehow adjust itself to temp changes and all the other varibles.

 

twogts4us

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Jan 26, 2008

#10

• Jan 26, 2008

• #10

SaleenGT2001 said:

its not good to turn off the front o2's. you better hope the tune is dead on and it can somehow adjust itself to temp changes and all the other varibles.

Click to expand...

Hell yeah! I just realized he was also talking about the front O2 sensors...
I'm no expert, but doesn't the ECU expect that info feed from the front O2s to make adjustments to the injectors (among other things)?
While sitting at a traffic light, I watch my A/F gauge dance above and below 14.7, all the while I'm telling myself "there the ECU at work, with input from the front O2s, trying to keep the motor at 14.7 at all times". So, as I said, without this input from the front O2s, how does the ECU adjust? Or does it adjust at all? I'd think the idle would be all over the place...but, as stated, I'm no expert...

 

SaleenGT2001

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Jul 18, 2005

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Jan 26, 2008

#11

• Jan 26, 2008

• #11

it is running in open loop and basically ignores a most of the sensors. i cant believe they would allow a car to betunedthat way. i can see if it was a race car but not a street car that sees many different changes

 

B

bdcardinal

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Jun 10, 2003

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santa barbara, CA

Jan 26, 2008

#12

• Jan 26, 2008

• #12

even race cars need input from o2 sensors. they can turn the rears off, but the fronts are pretty much required for any decent tune. also the computer cannot adjust at all if there are any changes. hopefully you dont have any emissions testing where you live.

 

R

rugster

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Jan 26, 2008

#13

• Jan 26, 2008

• #13

Timebomb

 

98blackstallion

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#14

• Jan 26, 2008

• #14

I have a Wideband a/f guage and it always shows point on what its suppose to be so I dont know. I have a very reputable tuner and If he says give it the go ahead then Im for it.

 

blackfang

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Jan 27, 2008

#15

• Jan 27, 2008

• #15

To my knowledge, yes it needs that input to correct or even to detect.


To the OP- Ok that is why I was asking because it needs those front sensors. I didn't see a WB on your mod list. Who tuned it?

 

98blackstallion

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Jan 27, 2008

#16

• Jan 27, 2008

• #16

Yeah I dont have the wideband listed I installed it cause I thought about doing nitrous but ended up backing away from that. The car does get bucky and surgy when it gets cold out but my A/f stay good.