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Old Feb 14, 2005 | 01:15 PM
  #16  
EVOTEXAS's Avatar
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From: Texas
Originally Posted by turbolarry
With bigger than injectors, you need to tune out fuel to get the fuel trims in line. It has nothing to do with timing at idle.
sabastian458 this should help you too;
http://www.evotuners.net/forums/showthread.php?t=315

We are not talking about injectors and yes it does have to do with timing at idle concerning the intake.
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Old Feb 14, 2005 | 01:20 PM
  #17  
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From: Westchester,NY
Originally Posted by EVOTEXAS
LOL, hey man, the ECU will put the car at 14.7 at idle or anything else closed loop. It doesn't matter what you set the AFC at, the ECU will move it back to 14.7 AF. WTH are you talking about? Maybe this will help:

https://www.evolutionm.net/forums/sh...d.php?t=116519

Besides, it's not AF that you need to adjust at idle to smooth it out. You need to remove some timing at idle. Please tell us how to adjust the timing with the AFC at idle as well, LOL!
Boy oh boy!! Have you ever had an SAFC? If you did then would notice how in fact the settings do affect the idle. If you move the % up and down at 1000rpm's you WILL notice a huge difference in the idle. With cams we used to richen up the mixture at idle up to about 12-15% and it made the idle 100% better. So please dont state something unless you have personally had experience with it, not that someone told you so or you read about it. The SAFC did a commendable job with the Evos, of course now with flashes and better piggybacks its almost considered ancient tech, but it does a decent job.
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Old Feb 14, 2005 | 01:51 PM
  #18  
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From: Texas
Originally Posted by superz
Boy oh boy!! Have you ever had an SAFC? If you did then would notice how in fact the settings do affect the idle. If you move the % up and down at 1000rpm's you WILL notice a huge difference in the idle. With cams we used to richen up the mixture at idle up to about 12-15% and it made the idle 100% better. So please dont state something unless you have personally had experience with it, not that someone told you so or you read about it. The SAFC did a commendable job with the Evos, of course now with flashes and better piggybacks its almost considered ancient tech, but it does a decent job.
I have an SAFC and it doesn't do anything at idle. It does a lot at Hi settings. I guess that would be personal experience. Don't make assumptions, they aren't productive. I guess you would realize that if you had clicked the link and read through it instead of thinking you know everything. Per my experience, TurboTrix's experience, and many other's experience, the SAFC does not make a difference in closed loop operation including idle. If you want to believe it does, you are free to do so. Take care.

Last edited by EVOTEXAS; Feb 14, 2005 at 01:54 PM.
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Old Feb 14, 2005 | 03:48 PM
  #19  
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From: San Daygo
This has already been discussed in SAFC tuning forum. I agree with evo texas. There won't be a difference or that significant difference because in closed loop it will relearn and change it automatically.
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Old Feb 14, 2005 | 03:53 PM
  #20  
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From: San Daygo
Originally Posted by sabastian458
but im not using a vent to atmosphere valve, im using a turbox recirculation valve.
I'm using a greddy recirc too. The EIDs buffers the airflow readings so it doesn't stall. Even though it was meant for VTA BOV it should work for your intake.
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Old Feb 14, 2005 | 08:29 PM
  #21  
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From: Rosedale, IN
Originally Posted by EVOTEXAS
It still does not apply as the ECU learns quickly and will "tune out" the AFC settings in closed loop even in Lo. SAFC only works in open loop. The Lo setting is meaningless on our cars.

Contradict yourself much? If the ECU learns so quick then you won't need any method of compensating on your own. If you tune the AFC correctly so you are running properly the ECU sees the car running properly and makes no changes.

Keith
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Old Feb 15, 2005 | 06:29 AM
  #22  
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From: Upstate, SC
got a glitch now, the car runs crapy every now and then with the safc2 installed, uninstall and it is fine, now i was under the impression that with as much mods that are on this evo i would have to have some type of converter/computer system to help lean and richen the fuel, is that true? because my evo runs much better with out one in it.
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Old Feb 15, 2005 | 08:15 AM
  #23  
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From: Texas
Originally Posted by Fourdoor
Contradict yourself much? If the ECU learns so quick then you won't need any method of compensating on your own. If you tune the AFC correctly so you are running properly the ECU sees the car running properly and makes no changes.

Keith

You need to learn the difference between open loop and closed loop before you make that comment.
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Old Feb 15, 2005 | 04:02 PM
  #24  
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From: Rosedale, IN
Originally Posted by EVOTEXAS
You need to learn the difference between open loop and closed loop before you make that comment.
I know the difference.... what is your point? Closed loop operations such as idle the ECU learns and compensates for variations, but it can only compensate a certain amount. The SAFC also can be used the compensate for mods at idle and as long as you are trying to work WITH the stock ECU rather than against it (in other words, if you know WTF you are doing) it works great.

Keith
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Old Feb 15, 2005 | 09:17 PM
  #25  
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From: Texas
Originally Posted by Fourdoor
I know the difference.... what is your point? Closed loop operations such as idle the ECU learns and compensates for variations, but it can only compensate a certain amount. The SAFC also can be used the compensate for mods at idle and as long as you are trying to work WITH the stock ECU rather than against it (in other words, if you know WTF you are doing) it works great.

Keith
Ok then I guess you're right.....
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