Mmm, Boost wrote:As long as its accurate and your boost control is sweet, then why bother?
Wtf?
How the hell will he know if its running 20, or over 20 if the gauge only goes upto 20?

If you're cheap and want to upgrade your gauge to drift-spec, rotate the face plate so that the needle rests where -5psi would be, so when its boosting 5psi, the needle now rests on 0.
This means you can now use the gauge to 25 psi.
Disclaimer - Ive never done this, and don't intend to. - Get a new gauge.