Was just looking through my helms,
and I noticed that the vx has a special O2 sensor,
its different from all the rest, the book says it reads a wide air/fuel spectrum!

Is this useable in the same way aftermarket widebands are used for tuning applications?

Seems like a good cheap alternative if it is.

Or more importantly is this something that everyone already knows about and I just think i'm spiffy cuz i have a helms and didnt do a search?

 

Bump. I'd like to know too.

 

I don't think they are all that cheap. Check out ebay they cost a pretty penny.

 

sounds interesting

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tad &raquo;</TD></TR><TR><TD CLASS="quote">
Is this useable in the same way aftermarket widebands are used for tuning applications?

Seems like a good cheap alternative if it is.

Or more importantly is this something that everyone already knows about and I just think i'm spiffy cuz i have a helms and didnt do a search? </TD></TR></TABLE>
I don't see why not, it's the same five wire wideband that can be bought as a replacement for most wideband kits, like the Bosch ($60) or NTK ($185).

Yea, if you can find them in the yards, they're like 200ish from Honda if I remember correctly.

Yes.

 

hmm,
pretty cool.

well, if i come across one i'll swoop on it then!

 

but if a 5 wire o2 is a wideband sensor, how can you use that in a car designed for a 4 wire. like i know to swap a b into a vx, you have to convert to a 4 wire. is there a way to use the p28 with a five wire if its really a wideband?

 

You can't just plug it in and go, you have to run it to capacitors so the ECU thinks it's narrowband, then you also have to run it to a something that can read it and display it.

http://www.plxdevices.com

 

well i heard that even the autometer is more accurate running off a wideband.

 

ok, the stock vx wideband is a 5-wire NTK... this sensor is NOT the same as the Bosch lsu 4 or 4.2. the linear scales for the 0-5v output is not the same.

the VX ecu can read this O2 sensor because it has the electronic capability to read a 0-5v input, instead of the (normal) stock non-linear 0-1v

 

PLX list the Bosch LSU4.2 and the NTK L1H1/L2H2 as compatible sensors, but I think it depends on which reader you are using.


Modified by 92b16vx at 8:46 AM 7/6/2004

 

4-wire O2 sensors can generate a voltage on their own. You can put them in a bench vise, hook up a voltmeter to the output/gnd leads and while waving a torch over the thimble, the voltage will change.

5-wire O2 sensors NEED a controller box. They do absolutely nothing without one. The stock Vx/Hx ECU's are the controller/interpreter for this sensor. Same deal with the PLX, TechEdge, AEM and all the rest....they need circuitry to control the sensor and to make sense of the sensors output.

 

does hondata feature such circuitry?

because the fact that the sensor needs such a thing isnt really a big deal,
because you're going to need something to tune your a/f ratios if you're thinking about getting a wideband anyways.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tad &raquo;</TD></TR><TR><TD CLASS="quote">does hondata feature such circuitry?

because the fact that the sensor needs such a thing isnt really a big deal,
because you're going to need something to tune your a/f ratios if you're thinking about getting a wideband anyways.</TD></TR></TABLE>

No, Hondata does not. You MUST have the control box. You then feed the signal wire into the ECU harness. Change it to open loop in the software, make sure the values are in sync with what the display says then start tuning.

I have used a few different widebands and have had the most luck with the PLX unit.