Subaru OEM Wide band O2 sensor idea

[G3-TEG]

Hey guys,
I heard that the new Subaru WRX's have factory wide band O2 sensor.

Wondering if it were possible to use one of those units on a Honda and some how fab up a unit to display the O2 readings?

Thoughts?

[ArturboGSR98]

If this is true I have a schematic to make a Air to fuel meter. I dont know how accurate it would be, but its worth a try.

art

[reddelsol]

I'd love to have that -- no more guesswork.

[G3-TEG]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by ArturboGSR98:
If this is true I have a schematic to make a Air to fuel meter. I dont know how accurate it would be, but its worth a try.

art<HR></BLOCKQUOTE>

What kind of output does you schematic use? Is it an analog output (autometer style) or digital reading like a multimeter?

Whats the 'resolution'? (ie. does it display on a scale of 1-100v or 1-10v? if you know what i'm talking about)

[ArturboGSR98]

The read out is anoalog using LEDs. But we can use a decoder to make it a digtal readout with a LCD. That would be cool. I would like to use a anlong meter with a sweep needle(if thats what you call it)

But what do you think?


art

[This message has been edited by ArturboGSR98 (edited April 23, 2001).]

[G3-TEG]

Hmm looks interesting.. Estimated cost on making one of those units?

Also, how many LEDS does/can it use (resolution)?

You prefer to have a 'needle' style output? I don't think that would react fast enough during an WOT run would it?

For example, if you are running at 12:1 a/f at 6000rpms and then at 6200rpms its at 11.2:1 a/f, you think the needle style will react fast enough to show a drop within 200rpms when you are at WOT?

[ArturboGSR98]

It appears that it uses 30 LED's. I didnt know it was that many.
But I'm thinking the parts will be around $20-$45 total.

You made a good point about the nedle style not reacting fast enough.

Now I need to pull out my TTL logic book to see what parts I can cross reference. Then I can go to Radio shack or order the parts online. I've been really busy lately so I dont know when I can come around to do it, but I think its worth a good try. Im up for it.

art

[G3-TEG]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by ArturboGSR98:
It appears that it uses 30 LED's. I didnt know it was that many.
But I'm thinking the parts will be around $20-$45 total.

You made a good point about the nedle style not reacting fast enough.

Now I need to pull out my TTL logic book to see what parts I can cross reference. Then I can go to Radio shack or order the parts online. I've been really busy lately so I dont know when I can come around to do it, but I think its worth a good try. Im up for it.

art<HR></BLOCKQUOTE>


Sweet, ok I've done some electronic design in the past, but nothing 'hardcore'. Do you have a circuit layout for this schematic? Also, if you have aparts list, I can start doing some research around here as well and see what I can dig up locally.

PS: 30 leds looks like plenty for a good 'resolution' for tuning. How would we know what led(s) corresponds to say a 12.5:1 /af ratio? heh

[ArturboGSR98]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by G3-TEG:

How would we know what led(s) corresponds to say a 12.5:1 /af ratio? heh<HR></BLOCKQUOTE>

Shit good question. But I think I can find out.

art

[G3-TEG]

hehe, well we can always hit a dyno and find out.