[Christ]

I know how they work, but I don't know everything about them by a long shot.

If I had to answer, I'd tell you that adjusting your boost level only compensates for max boost conditions, which you're never hitting anyway if you're eco-driving, unless your turbo engine is properly sized for your vehicle (obviously, it's not, else you wouldn't have been asking about boosting to begin with.)

This would mean that even if you adjust your max boost to something like 2-3 PSI, you're not actually going to hit that at all anyway, so it won't really affect anything, except the (hopefully) rare occasion where you floor it for fun.