Erratic idle and stall out during coast down with ac on

[justin14]

Looking for advice on what tables I need to adjust to fix my idle issue. I have a 2006 gto 6 speed 403 stroker with e40 ecm running 2bar speed density OS. My tuner has been swamped and hasn't gotten back to me after 3 tries to get ahold of him over the last month.

Anyway with the ac on my car has a fairly erratic idle and will sometimes stall when coasting. Even with the ac off the idle will dip to 400ish from the target idle of 900 when coasting to a stop but it won't stall like when the ac is on. Any guidance is greatly appreciated

[russ472]

try increasing your manifold volume by 15% at a time. should help

[justin14]

What table is that under?

[russ472]

fuel > transient > general > manifold volume

[SultanHassanMasTuning]

idle log would help and file