I'm assuming that your first port of call was changing spark plugs?
If the coilpacks are on their way out, and they are bad enough that its not idling right, it will def be missing on boost and you'll hear a bunch of misfires through the exhaust.
I'd change plugs to a $25 set of Copper plugs and see if the problem persists, before spending $$$ on new coilpacks.
What mods? and what plugs are in it atm?