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Hi guys got a quick question here. Does anyone know what boost I should be running on my gsr it's 350bhp and I've only had it a couple weeks and already discovered it had a blown head gasket. I put it on the rolling roads yesterday and its running over 2 bar of boost is this normal for the bhp or should it be around 1.6 bar I thought it should be about 1.6 and think this is the reason for the head gasket failure. Also its a evo 8 with a 9 turbo and has been mapped twice and has bigger enjectors a walbro fuel pump 3" turbo back exhaust and been decated and I'm not exactly sure what else has been done to it or if there is anything else been done. Any help would be really appreciated thanks.