What's the benefit to the Plenum spacer between u/l intake? More air space or less heat transfer or more? Would there be any ill effect to adding a spacer to the rear plate on a typhoon upper intake? It has a removeavle plate on the end opposite the throttle body and I like to be creative and thought about making a 3/8 or 1/2 spacer to out there if more air volume in there would be any benefit... or even just as long as it wouldn't hurt anything performance wise... I was hoping you could buy some.of that Plenum spacer material but I can't find anything so was just going to make out of aluminium ....