keeping heat in is not always a good thing, if you coat the valve covers then the engine temp will go up and the pcm will start to pull more timing than it already does to compensate and you will end up losing hp

98.5 Black SE ATX S&B filter, SVT MAF, optimized SVT TB, mesh grille, removed orange reflectors, painted rear reflector, gutted pre-cats, optimized SVT LIM, 19lb injectors, resonator removed cant afford an svt but lookin for 1 in nc