27-06-2013, 05:15 PM
You don't have to, but it will improve power to a point. Beyond that point it just narrows your power band and eventually reduces power by cooking the intake charge. He'd almost certainly get better area under the curve with lower boost than 28psi, show him this:
http://www.turbobygarrett.com/turbobygar...-2comp.jpg
28psi is more or less equivalent to a pressure ratio of 2.9, right off the map lol.
http://www.turbobygarrett.com/turbobygar...-2comp.jpg
28psi is more or less equivalent to a pressure ratio of 2.9, right off the map lol.