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Originally Posted by sccavee
When setting the low fuel trims does the car need to be under load? My seems to be acting strange. I reset the battery and when I try to set the 1000 RPM point, I have to go down to 0 on my S-AFC II to get the STFT to 0. I have 680cc injectors. Same with the higher RPM's? I am doing this while the car is not under load.
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Do you mean low throttle correction?
No. No load.
Try it first at idle. Rev and hold the RPM point. STFT's are going to fuxuate and as long as the LTFT's are with in +/-5 (as close to 0 as you can get) it's alright. Do this to 4000 RPMS.
Then watch the FT's while cruising a flat road/minimal load at the same RPM points. Make adjustments as you need it.
