Re: Anyone know how much horsepower just a Magnaflow exhuast will add?
So why does Magnaflow advertise performance increase on their site with Dyno's to prove it?
Grant it, I just installed mine because it sounds sweet, but would be interested to know why it's sold as a performance product. Could it be that it does add HP and torque when other mods have been made, and the extra flow allows the other mods to be more effective?