Originally Posted by Modshack

Pull all the rubber gaskets across the rear of the engine (they just snap out). They will allow a bit of ventilation, both moving and stopped. I've recorded significant temp reductions on other cars. Things will be a little louder as the gaskets are mostly for NVH, but you might like the induction growl. You can also pop the plastic piece at the rear strut tower mount for even more air. This engine dies not run partcularly hot. I generally see 182 degrees water temps while moving which is pretty cool..