Odd SR Behavior

[Drftn93SR]

I have a 93 240 with a s13 redtop swap done, sent it to JGY Customs, they got it running right, I went picked it up, I drove perfectly fine all the way back home (bout 2 hr drive) i got as far as pulling on to my street and some really odd stuff started happening, first thing i noticed was the fact it I wasnt boosting right, i would have about 18-21lbs vacuum, then i could only give about 1/8 throttle without it bucking on me, i can get the turbo to spool at 1/8 throttle but once it really starts getting into boost its like it wants to hesitate, just not go... (running 7lbs of boost) it makes it to about 5lbs before doing this, its progressing worse, now i cant really even hit boost, any thoughts on this?

secondly, i can start the car and its perfectly fine, can sit and idle perfectly, but its getting a weak battery signal, i moved the battery to the trunk due to my front mount. If i give it gas then it will cause a small buzzing sound down near the fuse box on the driver side floor board, i have checked to see if i have a bad ground, or if a connection has come loose and i havent seen a thing... Any suggestions?

"Note" I am reading off of a Greddy Informeter, shows everything is in order excpet its only getting about 9V from the battery and my idle is a little high at 1200 rpm.