turbo exhaust question

[97eclipseRS]

right now i have an arospeed bomb muffler on my car. would it be smarter/better for me to just put some 2.5" piping on there or should i just wait till i have an hrc stage 2 turbo kit and buy a whole new exhaust system all together?

 

[DSM-ZERO]

If you plan on re-building your motor and turning up the boost get a 3'' exhaust no sence on having 2.5 when you plan on going faster with more boost all the 2.5 will do is hold you back on preformance and slow you down. Plus a 3" will let you spool faster and get rid of unwanted back pressure, an aftermarket cat-back system off a GS-T will fit on your car.