The ws240 kit pushes the limit of the 3 bar map sensors. Between 30-32 psi of boost. We have never had a head gasket problem due to how hands on our tuning is with big power kits. Its hard to sometimes compare "kits" I have ws180 kits beating multiple stage 6 kits in Australia. Not really a fair comparison as we know the stage 6 should beat it. Our ws180 kit is just dialed in. Sorry I cant really post much anymore.