I am in need of some exhaust and I have a couple ??? My truck is a 2012 6.7 and I'm wanting to straight turbo back lookin towards 5 inch I'm not sure on what brand or if I will need a programmer or if I can take it to a shop and have them program it so that it won't throw codes I also was wondering if I will need the kit with bungs or with out not quite sure what all I will need any and all help tips or tricks would be very much apriciated thanks!!