new cat back exhaust

Discussion in 'General Chevy & GM Tech Questions' started by chihawks35, May 19, 2013.

  1. chihawks35

    chihawks35 Rockstar 100 Posts

    Ok im trying to figure out some things right now i have the 14 inch magnaflow muffler on my stock pipes. im looking for something a little louder and to possible get some increased performance from my engine. ive been looking at the force II and american thunder systems from flowmaster, anyone have any input on these.again i have that muffler so my truck has a little sound to it now, i want a little more, i dont want it waking up the neighbors loud but i do want it a bit louder.
    i have a 2007 nnbs z71 lt ext cab 5.3

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