ive got my eye on a gt28rs still deciding on the trim

 

I've put down 200 with my Greddy set-up. With one or two more components I think I can do a bit better than that now, but yeah, all I have left of the Greddy is the actual TD04 turbo and wastegate actuator. It's been a 3 year process though and it's allowed me to learn a lot about turbos. I knew next to nothing when I first installed the Greddy, but I was boosted right out of the box.

So yeah, if you don't need the learning curve and you're ready for big boost, skip the Greddy and go DIY.

At some point, I probably drop a new turbo into my current set-up, then start all over again replacing components til I have a full standalone.