The APs works great and sounds great on a F/I car, however I have yet to hear it on a N/A car.
I had both the Injen and the Borla on my car in the past.The Injen is a bit loud and "ricey", but looks really cool and goes together really well and does not leak. The Borla is smaller than the stock muffler and in my opinion sounds less exotic as the stock exhaust and is designed really crappy with the slip over and clamp fittings. Mine was forever developing leaks no matter what we did..
For the money, they are both good units, however if you want a superior crafted unit that will last and perform for the life of the car I suggest the APS True dual, especially if your going F/I in the future, you will gain from its 2.5" piping opposed to the others with 2.25" piping..
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