Super AFC Area is for discussing the Apexi Super AFC

Wideband and SAFC questions.

Old 10-09-06, 10:18 PM
  #1  
Shpee
Thread Starter
iTrader: (6)
 
JCurry's Avatar
 
Join Date: Jan 2004
Location: Tx
Posts: 1,940
Likes: 0
Recieved 0 Likes on 0 Posts
Wideband and SAFC questions.

My questin is, does a safc monitor a/f ratio, and does my ecu 88 TII with the rtek 1.7 chip accept wideband, how exactly does all this stuff hook, up and how does the wideband work, and how does the wideband, and safc work together????


Sry for all the question, but alot of this stuff has been on my mind for a while now.

Thanx
JCurry is offline  
Old 10-09-06, 10:20 PM
  #2  
Lives on the Forum
iTrader: (7)
 
Sideways7's Avatar
 
Join Date: Dec 2003
Location: Temple, Texas (Central)
Posts: 6,507
Recieved 1 Like on 1 Post
the safc simply fools the AFM into thinking a different amount of air is getting in, it has nothing to do with a/f ratios. No idea on the rtec, though.
Sideways7 is offline  
Old 10-09-06, 10:25 PM
  #3  
Shpee
Thread Starter
iTrader: (6)
 
JCurry's Avatar
 
Join Date: Jan 2004
Location: Tx
Posts: 1,940
Likes: 0
Recieved 0 Likes on 0 Posts
so wat is the purpose of the safc then? is it worth getting? And also does the wideband just monitor a/f ratio or can u make chages with it.... basicly do the wideband and safc to the same thing...
JCurry is offline  
Old 10-09-06, 10:29 PM
  #4  
Banned. I got OWNED!!!
 
-TAL-'s Avatar
 
Join Date: Oct 2003
Location: Brampton
Posts: 1,199
Likes: 0
Recieved 0 Likes on 0 Posts
they both compliment each other.

The wideband simply MONITORS your Air / fuel ratios

The safc tricks the air flow meter into thinking it sees less / more air, therefore the ECU can add / remove fuel.

Ideally a standalone is your best option... but an safc is a simple and cost effective alternative. You won't get the results you would with a full standalone though.
-TAL- is offline  
Old 10-09-06, 10:38 PM
  #5  
Shpee
Thread Starter
iTrader: (6)
 
JCurry's Avatar
 
Join Date: Jan 2004
Location: Tx
Posts: 1,940
Likes: 0
Recieved 0 Likes on 0 Posts
So y does a wideband seem all difficult and stuff, i mean they have all the cables that hook to a computer and all that stuff too, wat is all that for, and does it just replace your factory narrowband o2 sensor?
JCurry is offline  
Old 10-09-06, 10:42 PM
  #6  
Lives on the Forum
iTrader: (7)
 
Sideways7's Avatar
 
Join Date: Dec 2003
Location: Temple, Texas (Central)
Posts: 6,507
Recieved 1 Like on 1 Post
I think wideband replaces the stock narrowband computer, I guess its also possibly to run both if you make a new bung for it, but there is little point. Widebands are used with standalones to more accurately read the a/f ratios. I don't think they work with a stock ECU, as they have a different voltage range.
Sideways7 is offline  
Old 10-09-06, 10:45 PM
  #7  
Shpee
Thread Starter
iTrader: (6)
 
JCurry's Avatar
 
Join Date: Jan 2004
Location: Tx
Posts: 1,940
Likes: 0
Recieved 0 Likes on 0 Posts
I guess you can just replace your narrowband and take the little loss in gas milage huh, but wat is all the stuff for that comes with the wideband. How hard is it to tune with a safc, and has anyone used the new apexi safc neo?
JCurry is offline  
Old 10-09-06, 10:48 PM
  #8  
Lives on the Forum
iTrader: (7)
 
Sideways7's Avatar
 
Join Date: Dec 2003
Location: Temple, Texas (Central)
Posts: 6,507
Recieved 1 Like on 1 Post
I think it is fairly simple to tune with the SAFC, but I wouldn't recommend just starting to mess with your fuel if you've never done it before. Try to find someone that knows about tuning to help.
On a side note, from what I've read, widebands read on a 0-5V scale, while narrowbands use a 0-1V scale. I wonder if it would be possible to design a voltage divider circuit to bring the output of the wideband down to the stock narrowband ranges for use on with the stock ecu.
Sideways7 is offline  
Old 10-09-06, 11:00 PM
  #9  
Shpee
Thread Starter
iTrader: (6)
 
JCurry's Avatar
 
Join Date: Jan 2004
Location: Tx
Posts: 1,940
Likes: 0
Recieved 0 Likes on 0 Posts
That would defeat the purpose of the wider band of the wideband then right?
JCurry is offline  
Old 10-09-06, 11:03 PM
  #10  
Lives on the Forum
iTrader: (7)
 
Sideways7's Avatar
 
Join Date: Dec 2003
Location: Temple, Texas (Central)
Posts: 6,507
Recieved 1 Like on 1 Post
Well, you would still have the regular output going to the gauge or whatever its for, but have the modified signal going to the stock ecu. Its just a thought...
Sideways7 is offline  
Old 10-09-06, 11:13 PM
  #11  
Shpee
Thread Starter
iTrader: (6)
 
JCurry's Avatar
 
Join Date: Jan 2004
Location: Tx
Posts: 1,940
Likes: 0
Recieved 0 Likes on 0 Posts
ooo ok i see what your saying, i guess that would work in theory, are widebands really all that much better, because they sure do cost alot.... and wat is the best a/f ratio to shoot for when tuning the fuel system?
JCurry is offline  
Old 10-09-06, 11:17 PM
  #12  
Shpee
Thread Starter
iTrader: (6)
 
JCurry's Avatar
 
Join Date: Jan 2004
Location: Tx
Posts: 1,940
Likes: 0
Recieved 0 Likes on 0 Posts
http://cgi.ebay.com/ebaymotors/PLX-M...QQcmdZViewItem

Here is something like you were talking about, says it sends narrowband data to your ecu, check it out...
JCurry is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Coochas
1st Generation Specific (1979-1985)
36
09-15-18 09:54 PM
mulcryant
General Rotary Tech Support
5
10-04-15 12:18 AM


Thread Tools
Search this Thread
Quick Reply: Wideband and SAFC questions.


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: