Originally Posted by Oranoco
If the tuner has set it at that point it means that is the most boost they are prepared to run on your engine. You may be able to eek a little more out of it but it could all end in (expensive) tears
Chat to some tuners and see what they suggest to give you that extra hit
The tuner has set it up to be very safe. I've been told by a few people that running like 17-18psi will be fine. Just wanted to check first.