Hey 240Z Turbo and other turbo owners: Some of you are using different intakes and others uses the stock ones. So what are YOU doing to protect YOUR engine from over-boost situations? The stock pop-off valve is set at about 6.5-7 psi and installed at the rear of the intake. This item blows off boost in excess of 7 psi if the wastegate doesn't do it's job right. An adjustable po-valve used with a variable boost controller will allow my engine to boost higher than stock without the risk of overboost. This is different from a BOV installed on the intercooler piping which prevents compressor surge by dumping the boosted air charge if you let off the throttle during boost. So, it is safer to retain a pop-off valve and I ask again, how are you protecting your engine from overboosts. I ordered the HKS unit adjustable from 12-18 psi for this purpose. Shouldn't this suffice even if I only run 13 psi for a while? Thanks, Doug.