Had a nasty knock on the front of my evo9
my ARC intercooler's pretty warped because of it
mechanic recommended me to replace it with a stock one since they don't make them any more.
I am driving a std 6a12tt engine with stainless steel intercooler piping, boost up to 1bar, tulang ikan 6 all open.. Previous w greddy taiwan bov set to very soft but there was sooooo softyy sound..low boost...