wideband install

[LETZRIDE]

Couple questions guys.

1) in my 1996 camaro I have 4 O2 sensors...can I install my wideband in the factory location just before the cat and connect it to my pcm so that the pcm takes data from the wideband and uses that info to adjust the afr more accuratly?

Is there a way where I can leave the stock O2 sensors in place and still have the wideband work with the pcm to help the afr while driving stay accurate. (make the car accuratly adjust to what I am doing faster)

2) If the wideband is installed permantly on the car...how does it hook into the EIO ports on hp tuners? or how can I read it with hp tuners if I do not go through the EIO things on the programer box thing...

the wideband is a non gauged LC-1 by the way

[gotchocmilk39]

Re: wideband install

Well you need to leave all the stock O2s in their spot they get the pcm data on arf so leave them you need to get another O2 bung put into one of your pipes I would put it over on the passenger side before the cat but make it easy so you can take it out easy. See pic. The wideband is for tuning mainly it doesn't help the pcm with anything, in other words you help the pcm from what you see from the wide band. Did you buy the HP-tuners pro? if so yes it connects to the EIO's on your you have to have a positive wire from the Wideband in the EIO 2 and a Negative wire to the EIO 5. Then you have to set it up so that whatever you wide band is reading your HPtuners will read the same. Now I am no expert on this the guy I bought my Wide band from(Dan) really hooked me up with my whole set up!!! I have a L-m1. That is about all I can tell you someone more knowledge will need to chime in and fill gaps.

[LETZRIDE]

Re: wideband install

yea see...this is going to be a permanent install...so I am thinking it has to tap into the pcm somehow...otherwise...how does the pcm calculate everything accuratly...I mean, you are using the wideband for accuracy...

I have no problem adding the extra bung...

[gotchocmilk39]

Re: wideband install

yea see...this is going to be a permanent install...so I am thinking it has to tap into the pcm somehow...otherwise...how does the pcm calculate everything accuratly...I mean, you are using the wideband for accuracy...

I have no problem adding the extra bung...

yes accuratly for tuning/scanning this is my impression, by using what the wideband is reading on your scans you make the chages to your tune like Injector flow rates and the MAF Calibration to get your LTFL and AFR right (this is what I'm working on now). You just dont slap the wide band in and you pcm does the rest it is a tuning tool only. Again I am no the most knowledeable so I hope somone can chime in for ya.

[ssms5411]

Re: wideband install

Your wideband will have its own display and doesn't have anything to do with the PCM it is its own setup with the wideband sensor and display, like a gauge or a little box, then most have a .5 volt out on it so you can hook it up to Hptuners unless your using the EGR. Heres a pic of my display the red #'s on the box, still have to make it fit better with some trim.



http://memimage.cardomain.com/member...35_44_full.jpg

[jimmysprinkle]

Re: wideband install

I think what he meant is can the wideband be used to both tune his AFR while fulfilling the role of one of the stock narrowband sensors. The answer is yes, with a wideband that supports that feature. It sends a 0-5v signal to HPT for AFR logging, and emulates a narrowband output that gets sent to the PCM. I have no personal experience with this setup, however I know people have successfully run this setup.

[LETZRIDE]

Re: wideband install

ok...so if it is only used as a tunning tool...how is it a permanent install...it has to be always running or the O2 sensor gets damaged?

[jimmysprinkle]

Re: wideband install

Just unplug your before cat sensor, and delete the code you throw via HPT. Then install your wideband sensor there. You run the leads to a remote powersource, so the gauge only runs when you turn your car on. I know the sensors are liable to fail over time, but they're like narrowband sensors, they work for a long time.

[ssms5411]

Re: wideband install

You need the before CAT narrow O2 , it calculates the final value of the O2's in the headers. The post Cat is the O2 that just tells the Pcm if CAT is getting too hot, it is the COT (cat override temp). You need to just add a O2 bung next to your pre cat for best results.

[LETZRIDE]

Re: wideband install

I feel like installing the cam was the easy part lol... that extra bung is not a problem...

[ssms5411]

Re: wideband install

I think I paid like $10 at the exhaust shop to add the O2 bung really simple. The guys new me from going in and having welds done and they did my whole exhaust.

[RadRacer]

Re: wideband install

You need the before CAT narrow O2 , it calculates the final value of the O2's in the headers. The post Cat is the O2 that just tells the Pcm if CAT is getting too hot, it is the COT (cat override temp). You need to just add a O2 bung next to your pre cat for best results.

I've been running my car for nearly 2 1/2 yrs with only the 2 O2's in the headers. I've always been told they're the only needed 2......

[ssms5411]

Re: wideband install

I've been running my car for nearly 2 1/2 yrs with only the 2 O2's in the headers. I've always been told they're the only needed 2......

When I did mine about 5 years ago they were telling me to keep the precat sensor and run a seperate O2 bung for the wideband. Here is some info, I found while searching,

The fuel control Heated Oxygen Sensors (Bank 1 HO2S 1 and Bank 2 HO2S 1) are mounted in the exhaust manifolds where they can monitor the oxygen content of the exhaust gas stream.

To control emissions of Hydrocarbons (HC), Carbon Monoxide (CO), and Oxides of Nitrogen (NOx), a three-way catalytic converter is used. The catalyst within the converter promotes a chemical reaction which oxidizes the HC and CO present in the exhaust gas, converting them into harmless water vapor and carbon dioxide. The catalyst also reduces NOx, converting it to nitrogen. The PCM has the ability to monitor this process using the Bank 1 HO2S 2 and the Bank 1 HO2S 3 heated oxygen sensors.

The Bank 1 HO2S 2 sensor produces an output signal which indicates the amount of oxygen present in the exhaust gas entering the three-way catalytic converter. The Bank 1 HO2S 3 sensor produces an output signal which indicates the oxygen storage capacity of the catalyst; this in turn indicates the catalyst's ability to convert exhaust gases efficiently. If the catalyst is operating efficiently, the Bank 1 HO2S 2 signal will be far more active than that produced by the Bank 1 HO2S 3 sensor.

Although the Bank 1 HO2S 3 sensors' main function is catalyst monitoring, they also plays a limited role in fuel control. If the sensor output indicates a voltage either above or below the 450 millivolt bias voltage for an extended period of time, the PCM will make a slight adjustment to fuel trim to ensure that fuel delivery is correct for catalyst monitoring.

[RadRacer]

Re: wideband install

^^^
That's basically what I was told: The B1S2 and B1S3 both take a reading; they then compare the 2 to see if the cat is working properly or not.

[jimmysprinkle]

Re: wideband install

Yeah, you can pull them both out and delete the codes thrown through HPT. You actually want to use the pre cat location because the cat can alter AFR readings.