If you are using a downloader/programmer or if you are just running modified injectors on your 03-07 5.9L Dodge Cummins, then the Quadzilla Boost Fooler is a MUST HAVE PRODUCT! No need if you have a Quadzilla Xzillaraider, XZT or similar power module.
XZT Towing Module 65HP
Designed for Towing. Increase Fuel Economy 1-4 mpg. Lowest Price in the Industry.
Xzillaraider Standard Adjustable Module
0/30/60/100 HP Gains
Xzillaraider Adjustable Race Module
0/60/100/140 HP Gains
Air Intake 03-07
You will never have to buy another filter as long as you own your truck. Add up to 35hp 65 ft lbs of torque