I pinched a pcv line today on lunch and i didnt hear any click of the pcv valve like i would on other cars when the pcv valve is operating correctly.that tells me there is an abundance of heat being sucked into the im.i am pretty sure these pcv hoses are the culprit for my bogging or hesitation after a couple of spirited runs.add hot oil mist into the equation and there you have it.i'll find out soon enough after i put some cans on.this is my next mod for sure.anything to stop a direct heat path coming from my valve cover to the im.