I sort of posted this as part of a question on the 2009 forum, but it seems to be getting largely overlooked. Since the other part of the question got answered I thought I would reask this part here.
I'm looking for input on the best performing cat back exhaust for the 4.7L in the 2009. I am specifically looking to increase MPG, HP and Torque, and Sound, in that order. I'm looking for this mod to pay for itself eventually, and the increased power is next most important. The sound is largely irrelevant to me, I certainly don't mind making the truck a bit louder (so long as it doesn't get me pulled over) but I view the sound as an added bonus, not the goal.
What do you all think?
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