Greddy Turbo Questions

[Racing Rice]

Originally posted by Civic_Addict
I did some searching around on the site and didn't find some answers to some questions I had.

If a turbo has an internal waste gate, you can't add one to it can you?

I was just pondering this since I was looking into the Greddy Turbo for my Si and it uses an internal wastegate.

How any PSI can I boost with that system? I though I saw the turbo was rated up to 200+hp. Not sure it was a while ago. I know its an 18G turbo....

Im not sure about the Wastegate question.. But you can boost about 18 PSI with the 18 G..