i don't know if anyone here can verify this, I know that you could get some header wrap and wrap your manifold in it, on a NA motor it takes the engine bay temp down 65% - 85% depending on the brand and certain materials that can be add to the wrap like copper and stuff. try that. plus you know, just like super cooling your intake, super heating your exhaust (by wrapping) can give you more horses to. me and a friend wrap his headers and part of his down pipe and put heat shield on his short air ram and noticed a huge power jump. give it a shot. anything to heat away from the engine bay could help. and tou would also be getting heat away from the intercooler.