[john]

Shouldn't the ic piping be hotter than the intake mani though? The ic piping gets heated because of the hot air leaving the turbo. The longer the route for the air to travel, the longer the air has to cool off before entering the head. This leads me to believe that the intake mani would normally be cooler than the ic piping. Also, the intake mani is thicker so it would take more heat to penetrate the surface.

So you say the spacer insulates the intake mani. Don't the intake temps come from the ic piping, not the head? Or is it the head that heats the intake mani backwards?

Sorry, just trying to figure things out. I will probly go with one but want to know how the "big difference" comes in. Seems to me like long route ic piping would help then...