I just got the APR flash (done at Genesis Autosport, cool guys), and wow! I didn't have much chance to test it out on the drive home, but I think I saw it spike above 20 psi. I've got a couple hundred miles of open road tomorrow though, so I'll put it through its paces.

 

CONGRADULATIONS!!!
Your gonna love it! I know I did...
Only problem its just like a drug, your gonna want more!

 

Yeah... it's amazing. I'm holding 19 psi from 0 to 80 MPH. And I verified that it also removed the electronic speed limiter.

I'm not noticing the extra power as much above 80, but for city driving it's extremely obvious.