I empathise with your situation, I'm sure it's difficult and I'm sorry you have to go through it. It doesn't really change what has been said here though, the answers to your questions remain the same. You're just unhappy that they weren't what you wanted to hear. Even after winding down the boost was your "solution" you continued to ask how you would go about raising boost without a tune. Just keep it stock until you can afford to do it properly.

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MY08 WRX 325hp/456nm/18psi E85