ohhh my bad... hahahaa!!!
oooo, front bonet ya ? hmm... mayb can try put baloon to float it up ... GAHAHAA ok kiddin only ..
anyway, seriously.... if our car is NA, n if its juz the airfilter sucking in hot air we're talking about, u dun need to float ur bonet up wan la ... the truth is, when u move ur car even juz 10 feet forward, air rushes into ur engine bay from the holes/openings wan .. n it is actually quite cool in the engine bay, except when u're stationary la ..
u dun believe me? u pull open the hood latch (dun get down from ur car, juz let ur hood partially locked there) ... n move ur car (u can do this when u're driving into ur house), then faster get down ur car n pop the hood, touch ur airfilter ... u see la whether hot or not .. its not. (in my case la, LOL!) , then gradually it'll get warm. (coz u're stationary) ...
so juz use a nicely installed heatshield n CAI enuff ady ...