More fuel=More boost.
You're probably goin to be pushin it when you put in the 200's on a stock headgasket and head bolts. You won't "put out the fire", it'll just smoke like a b!tch.
I don't know the specs on ur A3000, so it may not.
Drive pressure is the pressure created in the exhuast housing part of the turbo. If your exhaust housing is to small then it creates a restriction in the outflowing exhaust pressure coming from the cylinders. If the flow is restricted to much then it will "back up" into to the cylinders and cause excessive pressures in the cylinders, which could cause a headgasket to blow.
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Dave
02 2500 QC Longbed 4x4--Goerend Triple Disk TC/VB/Flexplate/Billet input--VA/TST PM3--FTE 100hp injectors--BD 3-pc ported manifold--HX35--95gph HPFP--4" exhaust with a 7" blowhole 
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