SAFC and wideband tunning

Information on the naturally-aspirated KA24E and KA24DE engines.
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driftin2trance
Posts: 633
Joined: Tue Dec 21, 2004 8:35 pm
Car: 96 240sx

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yesterday i went ahead and finally tuned my car. (NA s14) becasue i checked the spark plugs and they were pure white. since i got the SAFC II i figured i will tune it with my buddies wideband. at some parts we could tell it was very lean and some parts it was very rich. so we drove around and tired to get to the ideal one (14.7). on the low throttle map, we added just a little more fuel here and there and leaned it out at idle by 1%, but at higher RPM's we added more fuel.

on the HI throttle we added more fuel at low RPM range by just a bit but at higher RPM range we leaned it out A LOT. at like 6400RPM its leaned out by like 15%! which seems very crazy. i know the 240s run rich at higher RPM but man, i didt know it was that much. plus i am propably that rich because my second o2 sensor is not hooked up. i will post up my full map later on, but what do u guys think? isnt that crazy that we had to lean it out that much? should i have 14.7 on all the RPM ranges or should i have some parts that are leaner and some parts that are more rich? thanks, adam.


mirra32
Posts: 276
Joined: Mon Sep 06, 2004 11:03 am

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i emailed ya......

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sunnys14
Posts: 1600
Joined: Sun Dec 05, 2004 8:59 pm
Car: S14

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at full throttle on NA, should you be aiming at high 13's on the wideband??


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