Now here's a question..

If i can run 19.5psi and my o2 is 0.92..
Can i just keep turning up the boost till it gets too lean? What reading is too lean? What should i stay above?

Also.. i'm at 0.92 BUT with the Mike J Maf mod i still have lots of room to richen it up.

So ideally, would i make it as rich as possible, then turn the boost up until it runs too lean (just above that of course)?
And if that's the case.. i could do the fuel pump rewire/upgrade and that would even make it richer and allow me to run more boost right?

What else should i be monitoring/be weary of.

BTW: I'm running a 16g, 3" turbo-back, stock (yes stock) fuel pump.

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13.904 @ 99.878mph - still need to learn how to drive