big prob
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
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.
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!
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!
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.
Last edited by EVOTEXAS; Feb 14, 2005 at 01:54 PM.
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.
Originally Posted by sabastian458
but im not using a vent to atmosphere valve, im using a turbox recirculation valve.
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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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.
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
Keith
You need to learn the difference between open loop and closed loop before you make that comment.
Originally Posted by EVOTEXAS
You need to learn the difference between open loop and closed loop before you make that comment.
Keith
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
Keith
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