low throttle tuning for afc

Nobody. I've searched

why do you want to mess with low throttle?

For a better tune. I have 650 injectors with the stock fuel pressure.
So everybody only does high throttle tune on the srt's?

If you had a scan gauge you could watch LTFT/SFTF and tune out fuel with the low settings to improve your idle a little. (try to get ltft closer to zero).

Other then that I'd say return line would help a LOT...but not the topic

I know a return line would help me out.

can't remember the thread it was in, but sauerkraut posted up the math on 750cc @43psi vs the stock injectors at 58psi. it gave the % difference between them, then you just start out by pulling that %. do a search on sk name and you should be able to find it.

I don't remember what post that was either, but the 650's on stock pressure flow around 750cc. the stockers only flow 577, So they will only flow approx.77% of what the 650's do. Inversely, the 650's will flow 23% more than the stockers. To even out your fuel trims you should be pulling about 20% in the low throttle settings. Get a scan tool or logger and start by pulling 15% and work from there.

Thanks guys. Exactly what I was looking for.
Looks just like how I did my dsm tuning. Time for a logger.

Guys im running the S2 injectors with S1 and was just wondering what % i should pull from the low setting to get my car to idel a little better?

any help would be great