Do aftermarket headers, exaust pipes, and mufflers improve turbo performance?

Question

I really am car retarded but im trying hard to learn.

Answer 1

The engine is basically an air pump.  The more efficiently the air can move in and out the more power you get.  The main goal of after market parts like this is to boost performance.  

So Yes performance will go up.  The question is will the power gains be worth the expense, aka bang for the buck.