Re: (RoflsaurusRex)
MBC is where it is at. It gives you better controll of you boost and if you spring for a boostvalve dual stage you can tun 2 diff levels with a flick of a switch.
Did it and it was the next best mod next to the chip. (Chip, tip, lower intercooler hose, GHL 3" turbo back, ATP high flow exhaust mani, Boostvalve dual boost control, CAI, lightweight pullies) 5 years and a work in progress!
Next would be meth injection. It shows the most gains on larger turbos, but every one can gain from it.
I have not got the meth injection yet, but that is next on the list for me.