Originally Posted by Killer Carton
The stock board that came with the GT does not have the PSI feature so if you have that its the upgraded GTi board. Easiest way to tell is if the board makes sounds and has a full color screen.
Thanks. Yea it makes a noise when you turn it on and I also noticed there is another sound that it makes, hard to describe, but it sounds similar to air entering a marker when you gas it up. The PSI screen indicates zero of course.