hi guys here with another question i want to change how my car sounds but i dnt wanna change the complete exhaust system and so far frm searching forums and askin sm people i found that i need : 1 decat stainless steel pipe 2 stainless steel b-pipe ( no idea what the b-pipe is if some can please explain) 3. And a backbox of any make. i just replaced the backbox abt 4-5 mnths ago cause the old stock one started making bad noises so i just put the normal backbox the one that mechanic told me to. so please guys help me what things im gonna need for the good sound with a lil power up wuf be great thnx..