3M or equivalent. As far as wrapping ..... I don't know what to tell you. My Y pipe is thermal coated. My intercooler is thermal coated. My dual CAI is coated with insulation, wrapped with header wrap and covered with Aluminum heat reflecting material. (no change in IAT's) I wrapped my thermal coated intercooler in a thermal wrap and the IAT's went up a few degrees. Air enters the front underneath the supercharger snout and exits under the Y pipe at the rear of the engine so it's hot, hot, hot. When I lost the seal between my supercharger and intercooler and was sucking air from between the cylinder banks (remember that stress?) the IAT's were 165º at cruise. When I entered boost they dropped to 120º in seconds. So right there is an indication how hot the air is under there. Give it a try and report back. I've almost given up trying to lower IAT's. The most I've accomplished is gaining time before they reach the same too hot temperatures.

Les