you can run as much boost as you want out of it but any more than 19 PSI your just blowing hot air its not going to be as efficeint as it can be. My buddies 91GSX did a 12.9 @ 18PSI the turbo lasted 50K. I have seen the 16G in the EVOs being run as high as 28PSI. these guys at 28PSI are putting down nearly 500 on the ground. with a GT35R at the same PSI they are getting better #s. only thing with them running 28 on the stock 16G they are all running the alky injection. some of the 35R guys dont even use the alky kits yet.

hey I dont know much about the 14B but Its not going to be doing what you want at really high boost levels. maybe the 1G guys need to just finish this thread