N/A exhaust systems start with a header, a b-pipe, cat, and cat-back system.
Turbo exhaust systems start with an exhaust manifold, downpipe, cat, then cat-back.
Your not going to get an Integra to sound like an SRT4...even with a turbo. Its just not going to happen. Totally different motor.
Alot of people want their Integras to sound like a WRX...once again, wont happen. If your car does sound like that (even when turbocharged), you've most likely fucked your motor and have catastrophic engine trouble and should be throwing a blinking CEL.
If you want to improve the sound of your car, carefully pick out exhaust components from the header-back, and don't slap on cheap parts. Cheap exhaust parts usually have garbage welds, are more subject to rust, and fall apart from the inside out.