Which is it, 7 lb or 20 lb? The Cobalt SS runs 20+ psi but that is not your average turbocharged setup. We use 5 psi on an application that is used in an environment where it would destroy most vehicles. Mazdaspeed3's run into problems at 15 psi, and WRX's/STI's are blowing turbos and pistons with less boost. Your average turbocharged application would be something like the Ford/Volvo T5, Saab's, and Audi 4-bangers. They are designed for longevity rather than performance.