That was on a 3SGTE, and that was being quite conservative, probably closer to 250 considering drivetrain losses on the awd. Very strong pistons, wouldn't consider 2618 for anything less that 25psi. They have a MUCH higher coefficient of expansion. That means 2618s are far more likely to scuff on leanout, since they will be much larger than a 4032 piston at the same temp, if they were originally the same OD.