If you are going to wrap, I would not use exhaust wrap. Exhaust wrap is designed to lock heat in the pipes to promote higher exhaust velocties. It can aid in keeping engine temps down but only because it is keeping more heat to the exhaust pipes.

 

Its a waste of time and money... I bought $60 worth of gold foil (supposedly works better than the silver stuff) to address header heat (yes they are ceramically coated but still cause lot of heat) - wrapped z-tube, maf housing, back and bottom of airbox and bottom of snorkeled/duct... didn't do ****.

 

Am I the only that understands the difference between radient heat and basic thermal loading You can't reflect underhood heat. It's a 140+ degrees there when you stop for more than a minute. Everything is going to start to heat soak regardless of fancy foils, blankets, or gaskets.

 

unless the intake is outside of the engine bay… inside of the bumper for example, then there would have to be an air temperature difference compared to a short ram style intake. therefore in theory if you were to insulate the intake tubing, the air charge would be colder, becuse the intake tube itself would be resisting the 140+ degree heat. If the intake tube is 140 degrees, then of course some of that thermal energy would be transfered to the air moving through it… The truth is that there has to be some effect, it is just too small to measure by feel… someone needs to run an ambient temperature test, and place a temperature probe inside of an unwrapped intake, and one inside of a wrapped one to get real results… im not trying to bash anyone, im just pushing a scientific approach. when i get a cold air intake, i would be willing to test this

 

I know a couple of owners of dedicated track cars that use the gold foil on intake and other areas - they seem to benefit... but for my application it wasn't notable.

 

Interfooler!