First off let me start by saying that this is my daily driver a 2005 BMW 325I with 90,000 miles. I just want to know if a cat delete is better than a straight pipe. But I am going for is a mature sound that BMW is known for. I want to make sure that the car sounds Very honed in. Has anybody experience the difference between CAT delete and a straight pipe and what suggestions would you haveTo help me improve the sound.