I am buying a stromung single tip exhaust for my legacy GT sedan. is there anything I could do to modify the cars exhaust for the better for free? while i am doing this stromung install? if so someone tell me! wanna mod my car!! ANy comments are welcome also... i need some help! I am new at the modifications... so if anyone knows of any VERY cheap mods, or free ones i can do myself to improve performance... please let me know!!