I am new to these forums and would like some insight. I have a 2004 F-250 Harley Davison 6.0 power stroke. I already have a bully dog programmer, I would like some insight on what is my best option for Air Intake upgrade and Exhaust upgrade. I do a lot of towing with the truck everyday. Looking for better fuel economy. Looking for something that will help without breaking the bank. Any help will be greatly appreciated!! Thanks in advance!!