Here is what I found out: I went to my local exhaust performance shop looking to blow some coin on a new exhuast system. The owner of the shop told me that they had already played with the H2 exhaust and actually found that the stock exhaust remarkably offered a mere 1/4 pound of back-pressure...which is almost nothing!
While this guy makes his living selling and installing these systems, he looked me in the eyes and told me to save my money; Aside from a deeper and more throaty sound, there would likely be virtually NO IMPROVMENT in fuel efficiecy or horsepower on account of the stock system already being extremely efficient.
While some manufacturers make claims and say they can support them with test data, I remain skeptical. [img]/infopop/emoticons/icon_confused.gif[/img]
|