you seem to be more interested in spending money just to say you have something cool sounding without actually getting any results. I.e, bigger turbo, bigger wastegate, bigger injectors.
Yet, it seems things like tuning and computers are a turn off because they're expensive and don't sound as awesome. Well, fact is, computer and tuning is easily the single biggest factor to making power, reliability, and also fuel economy.
If you get bigger injectors, you need a tunable computer, and then dyno tune. Same if you put on a bigger turbo.
The fact you're winding up the boost and your car doesn't go any better is proving that your computer and probably fuel system are NOT coping with what you're forcing the engine to do.