nath
Member
Well my 2 cents, I put a FLomaster on my 5.3 in the Hoe and removed the Resonator and it is just right. However, I put a Flowmaster on my 6.0 in my 04 EXT and OMG!!! it was too effin loud. I had also removed my Cats and resonator I had to go back with the Magnaflow 2 in 2 out 3.0 inch .. Now it sounds awesome!!!! I really love the growl of that 6.0 and man it runs like a scalded monkey!!!!! Another plus is that I am getting 1.5-2.0 miles per gallon increase. I know it does not sound like much but it really does make a difference. !!