s13 blacktop sr wont boost? please help

[Destructodc74]

okay so i have an s13 blacktop sr, i was running 11lbs on the stock t25 for at least a month until one day i was ripping it on the highway threw it into fifth and lost all power if i stepped on it, the car sputters and you can hear the turbo trying to spool but nothing, my gauge reads probably ~2lbs max. so i figured i blew my turbo beating on it, so i ordered a rebuild kit and then pulled the turbo, it didnt feel like it had much shaft play to begin with but i brought it to a shop and they tested it and it was still perfect. so no idea what it could be, i changed the plugs because my car has fouled them before. any input is greatly appreciated. thanks.