hello everyone, well i found that my drivers side header has a crackin it. from what i can see it has been welded before but looks like the welder just covered up the crack. i am having the typical problems of a cracked header no boost at line, low boost, etc. woudl this explain my crappy times at the track??? and is there a good place i can take it to, for repairing?? or shall i just get a postons or ATR replacement??? TIA