I honestly think something is wrong with my turbo. It reaches max boost around 4500, so it's obviously building boost pretty late, which is why it flat lines around 4800. Not quite sure what I want to do yet, but I bet that turbo is no good. I'm thinking maybe to take it out and send it in for a professional rebuild or buy another one. Either way I'm thinking about keeping the 18G turbo, because I don't want to spend anymore money on further modifications for downpipe and manifold. That way I can spend the money on my future build on an EK. What do you think?