OK lets clear up a few fallacies here..
The stock dump pipe and front pipe are shit. Changing them to better items is the FIRST thing you do, even before contemplating putting a bigger turbo on. They make a huge difference on a stock turbo, why you would ever considering running stock dump/front with a BIGGER turbo is beyond me.
Bigger turbos NEED to be tuned for them or they just feel shit and is absolutely pointless.
Full boost is a subjective term. Full boost for one person is different for full boost for another person.
When you put a bigger turbo on, you HAVE to tune it, in particular you need to clean up the low load/rpm areas as they are no longer seeing the same airflow as with the stock turbo. Cleaning up this area helps get the engine on boost faster, leaner ratios mean hotter exhaust gas means more exhaust gas flow equals faster spooling turbine. It's not rocket doctory.
Some adjustable cam gears wouldn't have gone astray either.
Bigger turbos need to operate at higher boost pressures, 7psi through a big highflow would not be getting anywhere near its' efficiency range.
NIStune is an excellent engine management option, anyone who says otherwise is either stupid or trying to sell you something more expensive.
At the end of the day John, you had a completely shit setup. We tried to explain to you what to do (and it wasn't expensive) to correct the situation but you refused to listen. This is the last time I'm going to mention anything on the subject as I'm sick of just wasting my time and effort for someone that refuses to see reason.
If you'e not going to use that split dump pipe then I'll have it back thanks, better and more appreciative places it can be used.