Improve mileage with this homemade kit (electrical)

Gannon · Post by **Gannon** » Sun Jun 18, 2006 5:30 pm

No im not trying to sell you something
I found instructions to build a controller that will modify the o2 sensor output to give the ecu a better signal, a square wave rather than a sine/triangle wave. it allows the ecu to adjust the mixture quicker.

http://better-mileage.com/memberadx.html

Browse the site, there is quite a lot of interesting information on there

Gannon

subanator · Post by **subanator** » Sun Jun 18, 2006 11:53 pm

Thanks Suparoo, will be having a look at this one.

fredsub · Post by **fredsub** » Mon Jun 19, 2006 9:26 am

thanks, interesting if you have O2 f/b

hey if you try it Suparu lets us know how it goes....
theres a simple WI control for NA cars that looks too easy :P
that and using standard unleaded could save some good $

PeeJay · Post by **PeeJay** » Mon Jun 19, 2006 7:01 pm

I don't get it - why dosen't the computer just read the signal correctly in the first place?

SCOOBIDOO · Post by **SCOOBIDOO** » Mon Jun 19, 2006 7:14 pm

It does....but you get loser,s who want to screw with big buck tecnology..and claim to improve it..but they not intelligent enough to go out and buy something real..like a WOLF...I LIKE THE WAY THEY BITCH AT ANYONE WHO HAS SOME EXPERIENCE...but thats only on this user name...they are real nice to me on my other login I.D,s.

Gannon · Post by **Gannon** » Mon Jun 19, 2006 7:23 pm

Yeah PJ, i was wondering that myself

But i suppose that the ea82 ecu was designed in the early to mid 80's and computer electronics was only really starting to take off then.

And there is a section of text in there that says that the o2 sensor's response times get worse as it ages, so i suppose that is where this device may come into play.

I may not even try it, i just thought i mite share the idea with the rest of you.

I do however want to make that a/f ratio display.

Gannon

BrennyV · Post by **BrennyV** » Mon Jun 19, 2006 7:36 pm

SCOOBIDOO wrote:It does....but you get loser,s who want to screw with big buck tecnology..and claim to improve it..but they not intelligent enough to go out and buy something real..like a WOLF...I LIKE THE WAY THEY BITCH AT ANYONE WHO HAS SOME EXPERIENCE...but thats only on this user name...they are real nice to me on my other login I.D,s.

This is a very true fact, I don’t think these car companies are anywhere near as incompetent as some people would like to think

fredsub · Post by **fredsub** » Tue Jun 20, 2006 8:37 am

all in all its an effective way of adjusting where the ecu thinks it is in the fuel map........Jaycar has a kit that does the same only its a bit more sophisticated.
as far as ecu not being able to correctly read the signal because its not a sine wave or dc, I have my doubts.....maybe applicable to older designs....
Modern O2 sensors are fast, esp check out the wide-band ones..capable of giving a reading off each cylinder, so if there is averaging its in a very small window, and the embedded micros are much faster today to deal with it.