wondering if i blew a head gasket my problems started way back when i first got the car stock fuel pump dying ou 20# at idle 38# wot the day i got it it ran like a raped ape then it started to idle rough any way fixed electrical and fuel system got scanmaster tune is perfect, 14.5# zero knock but now the car still idles rough and it pulls and flattens out at full boost. i also smell coolant when i let off at wot. comp. test shows all 140#. also oil and smoke spews from breathers under boost what do you guys think. when i got scanmaster i was getting 1.7 to 15 degrees of knock before tune