Some years may be a little differnt. Mine, an 03 2.0L, stock is 13.5, but tapers down as it approches redline. Also, max boost is different for 1st, 2nd, and 3rd-5th, with max. being raised a little each gear.
To OP, this may be a chance to go ahead and upgrade to an inlet and MAF silicone hose, lasts longer and performs better. Win-win.