Yeah, someone needs to settle down. If YOU would have read the SAU FAQ, you wouldn't be asking the question. It clearly states that you need to disable the boost controller setting if you do not have the Apex boost controller add-on. Apparently XAT didn't do this when they installed your PFC and "tuned" your car.
Also, there are hand controller instructions (in English) on the Apexi website under support. Check out this link if you haven't seen these already.
http://www.apexi-usa.com/pdfInstallation/12.pdf
Just an FYI, carlh knows everything, but a lot of other people know enough to answer your questions whatever they may be. No need to call him out. It makes the rest of us feel inferior.