I would like to start a conversation about what is a safe level of boost to run, with a proper tune of coarse. I'd like to know what people have run (25 psi+) and what you did to get there. I would like to run 30 psi in my van on my basically stock 2.4 (pistons, combustion chambers, valves, & exhaust runners are ceramic coated and I'm using ARP head studs) but is that safe? Again with the proper tune. I'm going to start tuning this week with E85 which will help me run that much (or so I think). I'd like to know what people have run, what problems you've experienced along the way, and what you did to resolve those problems and reach your goal.