Boost control help

[BlackEclipse62]

I need help on turning up my boost, I have made MBC following the directions on this website "the home-depot style one", but I can only still run about 4-5 psi. I have a T3 .42/.48 turbo. I have unplugged the hose that I used to have on the wastegate and ran it like that(with nothing on it to send no signal), and the most I have ran was anywhere between 6-7 psi at about 6500 rpms. Does anybody have any suggestions on how I can turn the boost up to 8psi. I have also plugged the hole on the side of the turbo housing to prevent leaks from there. thanks for your help and your time.
Andy

 

[BigRand]

Check the length of your vac hoses, short hoses will allow the boost to go up on its own a lil. Especially if your already at 6-7

 

[BlackEclipse62]

Is it alright to ride with no hose hooked up to the wastgate actuator. I thought if you unplug it it should go higher than 6-7 psi, I am I right? (no signal going to the wastegate to open it up). Could it be that I have a faulty actuator for it to open up at 6-7 PSI with no signal. I thought maybe a T3 was good up to like 14-18 PSI, or something like that not 6-7. Thnaks again for ya'll help
Andy