In changing out the stock mufflers on my '06 GT, I'm amazed to learn that the exhaust note without ANY mufflers is not nearly as loud or raspy as I imagined it would be. Now I'm seriously considering running straight pipes with tips and forgetting the axle-back muffs. But I'm concerned as to whether there would be negative consequences that I'm not aware of, such as loss of torque or horsepower, complications with the engine/computer, on & on. Am I wise to install mufflers even if I'm happy with the present sound? Are there any Ford warranty issues lurking here? Thanks in advance, guys.