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trying to understand the safc.... got some q's

Old 05-18-2006, 03:40 PM
  #1  
1.5 BAR
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Default trying to understand the safc.... got some q's

hello everybody.
i have some questions about the safc.

-whats TH. POINT? and how\according to what do i set it? (now set to lo:50 hi0)

-how do i need to set the sensor type? (IN\out) and what its purpse? (its now set at in:05 out:06)
(just for the record... i got a stock denso map pn: 079800-3000

thanks.
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Old 05-18-2006, 04:05 PM
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Default Re: trying to understand the safc.... got some q's

this is how the rest is set:

-graph scale:
pr: 760mmhg
cr:+-3%

-dec air
thr ****%
ne1 10.0%
ne2 10.0%

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Old 05-18-2006, 06:55 PM
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Default Re: trying to understand the safc.... got some q's

let me explain it with an example:
lets assume you have your th point set lo:20 hi0
and your settings in low are -40% accross and high are -30%

with this setup until 20% throttle afc will be using the low fuel setting whic is -%40
higher than 60% throttle -30% will be used
between 20% and 60% some value between -30% and -40%
i.e. at 50% throttle -32.5% will be calculated and be used (some basic math..)

you dont need to do anything with NE points.. not sure but i think its some stuff with the maf type cars running rich at gear changes

sensor types should be 6/6 if im not wrong.. apexi has tested the product and adjusted according to some specific sensors and given them numbers so that you choose the right one
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Old 05-19-2006, 01:59 PM
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Default Re: trying to understand the safc.... got some q's

but how do you know if you are right putting -30% or so ? i imagine -30% (fuel), you are leaning your car , right?
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Old 05-20-2006, 07:23 PM
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Default Re: trying to understand the safc.... got some q's

yes -30 is leaning but if you use bigger injectors its going to be compensated.. a wideband o2 should be used getting a good a/f ratio set
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Old 05-20-2006, 07:30 PM
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Default Re: trying to understand the safc.... got some q's

ok, i was wondering too, when you set with SAFC, you run your car and you have a A/F in that moment, then you gradually down or up the % for to get the a/r correct or the A/F you want.. not?

ty

P.D That's the samething with a chipped ecu?
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