Do you have the OEM BCS bypassed or removed? It MUST be bypassed while running a MBC. The OEM BCS is definitley not the best item for that function. I would make sure your boost guage is reading correctly by cross-checking with another direct-read guage to make SURE your guage is correct. If so, then go ahead and dial up the boost. You can go as high as 17.5 while stock and not see any real problems, unless the air temp gets real cold, then you may need to dial it down a psi or so. I recommend you save up for an AP, even while stock, so you can get the most from a stock setup. It will take some tuning though....
im unsure of how to bypass it. i have still in the car and plug for it is just unplugged how dose one bypass the electrical part? i have it vacuumed by passed by my MBC, its hard to type out and explain but the vacuum wise its completely bypassed, is there a way ti by pass the plug for it??