Can't tell how much this alone helped as I also converted Ford's factory 90 degree Y pipe to a true open Y pipe and removed the resonator. Installed a 3" rear pipe muffler and a ProFlow muffler. Single exhaust. But now it's a more productive truck. And on the highway it gets 1-2 mpg more. Now it sounds like a truck too, but not too loud.
Enhance Your Engine Power with Standard Motor Products U44001 Supercharger
3 Review
π Samsung DC62-00202A Valve-Check - High-Performance Wings EPDM P for Superior Functionality
3 Review
π§ ACDelco 214 1047 OEM Fuel Injection Component
7 Review
π Flowmaster 843015 3 Inch Inlet/Outlet Super 10 409s Performance Muffler
8 Review
Upgrade Your Mazda MX-5 Miata With CravenSpeed'S USA-Made Door Bushings
39 Review
2007-2017 Jeep Wrangler JKU 4 Door Sunshade Mesh Top Cover - Durable UV Protection With US Flag Design - Voodonala
31 Review
25Pcs Fender Liner Screws For Toyota Avalon Camry Corolla Scion Lexus - OEM #90159-60498
35 Review
Off-Road Fender Flares For Jeep Wrangler 2007-2018 JK & JKU Unlimited - Heavy Duty Flat Textured Steel Mud Guards In Black (Set Of 4) By Hikotor For Front And Rear Replacement (2 Or 4 Door Options)
47 Review