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unplug your iacv from the harness and see if it runs any differently. My car runs 100% perfect with it unplugged so I just leave it off. Is your bov vented? if so can you stiffen it or recirc it? Shitty alternator/battery/grounds can cause symptoms like this as well. It would also be a good idea to change out the plugs if it's having warm start issues.
when you boost leak tested it did you open the throttle body?
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