I wish I could help but I had my X-Pipe and Ford Racing Sport Axle-Back Exhaust put on and then had the CAI put on. Not a chance to hear the difference. Sorry couldn't help you out.
2013 Silver V6 Premium, Ford Racing Handling Package, MGP Black Caliper Covers, Airaid CAI, Bama Tuner, BBK Catted X-Pipes, Ford Racing Sport Axle-Back Exhaust...Alum One Piece Driveshaft, BBK Ceramic Shorties, Whiteline Adj. UCA, Whiteling ADJ. Lower Control Arms, Whiteline Adj. Pan Hard Bar, Upgraded Rotors (Cross Cut and Drilled), Ceramic Pads, J&M Stainless Steel Brake Lines (Front and Back), 18" Staggered Chrome Bullitts, MMD Eleanor Side Scoops, Side Scoops, Roush Front and Lower Grilles and Super Snake Stripes.