Long story short... trickflow hci, 24# injectors, matching 76mm maf, egr delete, smog pump delete, walbro 255 lph fuel pump, 70mm tb, all new and upgraded valvetrain components. Anywho.. car doesn't have a tune, I'm on a waiting list to bring it. Turn my AC on at a light, and idle drops and immediately stalls. Turns right back over but if the ac is still on, shuts off. Now.. if I rev it up and take off, it'll buck and shake a bit all of first gear. Turn the ac off, and she runs perfectly. Bad iac? Maybe a tune will rectify the issue if it had been caused by the HCI swap and lack of tune.