EFIE Schematic? - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 07-21-2011, 09:14 PM   #1
Registered Member
 
Join Date: Jul 2011
Posts: 8
Country: United States
EFIE Schematic?

Dear Forum,
Does anyone know of a good schematic for an EFIE for the oxygen sensor?
Thanks a lot!
Mike
__________________

Cburg is offline   Reply With Quote
Old 07-22-2011, 05:49 AM   #2
Registered Member
 
theholycow's Avatar
 
Join Date: Apr 2008
Posts: 6,624
Country: United States
Send a message via ICQ to theholycow Send a message via AIM to theholycow Send a message via MSN to theholycow Send a message via Yahoo to theholycow
Re: EFIE Schematic?

http://www.google.com/search?q=site%...avers.org+efie
4th result -> http://www.gassavers.org/showthread.php?t=8912 ->
Quote:
Originally Posted by theholycow View Post
I know I've found all of these here before but I'm having trouble digging them up again. I usually save this stuff when I find it but I can't find any saved copies either.

I did find this AFR meter on google:
http://www.scirocco.org/tech/misc/afgauge/af.html

I found this DIY PWM on google:
http://www.rmcybernetics.com/project...generator2.htm

Here's some EFIE digging...
http://better-mileage.com/memberadx.html
http://www.youtube.com/watch?v=PEHJ9te7gvk
http://www.esnips.com/doc/718eacd2-0...nhancer-Manual (or download at http://www.esnips.com/nsdoc/718eacd2...action=forceDL )

I wish I could find the ones that have been posted here before...I remember some pretty decent ones a couple months ago.
Note that the first EFIE link there is bad but the Youtube and esnips links are good.
__________________

__________________
This sig may return, some day.
theholycow is offline   Reply With Quote
Old 07-24-2011, 10:20 PM   #3
Registered Member
 
Join Date: Jul 2011
Posts: 8
Country: United States
Re: EFIE Schematic?

Hi HC,
Thanks for the info! Do you have any idea why the esnips circuit uses a 555timer and adds voltage to the output of the O2 sensor, while the poor man's circuit just adds voltage to the output of the sensor?
Thanks!
Sincerely,
Mike
Cburg is offline   Reply With Quote
Old 07-25-2011, 03:29 AM   #4
Registered Member
 
theholycow's Avatar
 
Join Date: Apr 2008
Posts: 6,624
Country: United States
Send a message via ICQ to theholycow Send a message via AIM to theholycow Send a message via MSN to theholycow Send a message via Yahoo to theholycow
Re: EFIE Schematic?

Sorry, I have no clue.
__________________
This sig may return, some day.
theholycow is offline   Reply With Quote
Old 07-25-2011, 03:48 AM   #5
Registered Member
 
GasSavers_BEEF's Avatar
 
Join Date: Apr 2008
Posts: 1,831
Re: EFIE Schematic?

the 555 timer will give almost a clock pulse. basically all you need to do is bump up the voltage to chance the AFR though there are limits to how much you can change it.

I would think that it is one of two things. either the system would like to see the pulsed signal but can handle a solid voltage instead or the 555 timer is just there so that it looks compicated and someone wouldn't try to replicate it themselves. many times companies put in stuff like that just so people won't try to copy it. they make it look complicated though it is not. there again, just a theory on my part (hypothesis actually)
__________________
Be the change you wish to see in the world
--Mahatma Gandhi



GasSavers_BEEF is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
I come bearing DIYs for your 92-95 Civic Hatchback deschlong Introduce Yourself - New member Welcome 5 12-28-2009 07:48 AM
96 HX owner with a scanguage 2 sg2 questions bockwho General Fuel Topics 13 10-18-2008 06:55 AM
-- Anyone tried blocking their Air Intake? -- trautotuning Experiments, Modifications and DIY 6 06-22-2008 05:19 AM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 07:56 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.