14.2psi == 1 kg/cm2
14.5psi == 1 bar

The feedback speed might be off for your wastegate. Did you learn the 
gears? If so, go to the F/B speed. If it's underboosting, turn down the 
F/B speed. If it's off, start off with a middle number (5) then slowly 
turn down the speed to get the proper max boost (or turn up the speed 
if you're overboosting). If I remember correctly, I used a setting of 
3 for all 5 gears on my stock wastegate (It's been a while). You can 
set this for every gear to ensure you get the same amount of boost at 
all times.

One other item, check the "learned" boost curve, at over 5000rpm 
(approx) the duty should be 100%. That's about when the turbo fully runs 
out of steam.

Once you get the boost dialed in for all 5 gears, you can edit the boost 
curve, so it's not flat. Add more boost on the bottom end, you can set 
rpm specific boost levels, and it'll automatically update the duty cycle 
to your settings. It's really a lot of fun =).