[Suit]

is that setup internal or external gate? looks external either way make sure you setup the wastegate properly and make sure the wastegate is not stuck open i mean your comp wheel is barely turning thats all i can think in regards to the turbo not spinning lol

as far as the rpm problems my car did the same thing (idling stupid, dying when given gas) so it may sound stupid simple but find someone with a maf you know for sure is good and try theirs. my car at one point would just turn over and not even fire up, and it was the maf.