I am currently running a 4" silverline exhaust on my stock 07 Ram. I would like to know if there will be a power gain or power loss if I switch to a 5" turboback exhaust since my truck is stock; my local mechanic said I would lose power. Need advise. Thank you!

 

i think you will lose power but it will be minimal the sound of a 5 inch will change though i hear they are deeper. i would say stay with your 4 inch not worth the money

 

just stick with your 4", 5" does nothing for you until your past 450 HP...