if im planning on boosting 7-8 psi would i need a sacf or btm to control my a/f ratio or could my ecu take care of it on its own? id be using 450cc injectors and the 255 walbro pump.

are you boosting the 5sfe or do you have 3sgte?

If the 5s, then yes, you will need some sort of fuel and timing control. The MSD BTM and safc will do, but members on here feel that the greddy e-manage is a much better solution. Check out Pressure2's posts on the subject.