Idle Tuning

[lplott]

What AFR are you guys trying to tune to for idle at normal ops temp 14.63 or something leaner?

I have a Map logging IACDES_B by ECT, but all the readings log in PARK/NEUTRAL and I have a MN6 but my Desired Air Flow by ECT has both In Gear and Park/Neutral columns with all the data in the In Gear column.
Is something wrong here?

Thanks
Lonnie

[TAQuickness]

Not sure about every one else, but my bird likes 13.6-13.8 at idle

[MCG]

9.12:1 A/F






Oh, but mines on alcohol

[Black02SS]

Depending on the car anywhere from 13.8 to 15.0

[VetPet]

9.12:1 A/F






Oh, but mines on alcohol

You should join the alcoholics anonymous forum!

[TAQuickness]

nah... alcoholics want to quit

[VetPet]

Just to add something here and please correct me if I'm wrong. The best idle you will get is when you're making the most vacuum. To optimize your idlle, the combination of timing and afr will be such that you make the most vacuum. Make sure to scan your vacuum as you adjust your timing and afr and look for the point at which you make the most vacuum. Now, you do have to be careful because although adding more timing may smooth out your idle it will also cause your car to surge. Add timing slowly and once you reach the point where your vacuum reading no longer changes stop. You may even want to back off the timing a degree or to at that point to see if it makes any difference. Before making changes, always give the engine a chance to stabilize itself. As has been stated, use the bidirectional controls in the scan tool.

[ringram]

Highest vacuum and leanest is what I understand. "lean best idle" on google will throw a few hits.