You are asking for the impossible. Exhaust systems are like fishing stories, they all supposedly sound great, added horse power, gained mileage, and lower EGT's... ... . NOT Look around and compare features, price, and quality. There are many systems available, and most will do a good job. Most opinions are going to be one sided, it's just to subjective of an issue. Also remember this site is like all other sites, while there are many here that offer there advice freely and without condition. There are also many that have a vested interest in what you do, and there opinion may be slanted in there favor.