Carb/throttle body icing is a real thing where i live . everyone always deletes the stove pipe, as if it's a performance hindrance? it helps with cold startup drivability and gets the car up to operating Temp faster..if the system is operating properly i can't see how it affects performance? I haven't tried one but also heard there are good gains from the "salad bowl" mod. my TBI caprice had an IAT "bird cage" style that was in the air cleaner. i was always told the MAT sensor (same as a CTS) was not as good because it responded to changes slower. there was actually a bird cage style one you could use from a 6.5L diesel....