Iv'e got an s2 turbo running cossy managment running 19psi and 220 bhp it has only been mapped a couple of days a go and the head bolts have given way its got a group a felpo head gasket and standard head bolts does anyone have any ideas on wot the head gasket can take and wot the bolts can take and any ideas on wot i can do to solve this problem, if you can help that would be cool thanks.