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If you are currently running a 4" exhaust with a muffler
which translates into superior performance and overall ride quality
you will not need a switch to change power levels
the second we get our hands on the keys to our new (to us) truck
Sinister Diesel Cold Air Intake 03-07 Dodge Ram 5.9L Cummins FOX-803-02-044 If you are currently runningWhen adding performance to your 03 07 5. 9L Cummins, the easiest way to increase power output is to increase air coming in. This intake from Sinister Diesel will drastically improve inlet air flow gaining you more power to the ground. This intake kit significantly improves throttle response and turbo spool up. Sinister Diesel only uses a precision CNC mandrel bent aluminum tube for the intake, ensuring smooth flow of air. Silicone couplings combine
