Which 'tiny turbos' are you talking about? Have you looked at the Mitsubishi series of turbos? Some of them look like a reasonable fit to the 225 at 5000 RPM for lower boosts. In fact, they can easily push past 8-10 psi on the 225 engine size. The reason I thought of them is because I use a 16G Super on my 2.6L rally engine, and with the right impeller blade, the dang thing is already burbling and turning at 800 RPM idle. Quick boost right off of idle; it is all in the impeller blade.
Are you planning on a boost bypass valve? If so, it makes it easier to make the boost come up early and them limit it to what you want.
Not ever being out of school is a good thing!
