I know your gonna think that I must be getting old but I'm looking to upgrade my exhaust without it becoming loud. I have a 2004 Durango with a 4.7. I have added a K&N which has woke up the 4.7 quite a bit. I tried the Cortex tuner but that actually did nothing for my vehicle. I returned it yesterday. Still looking for some more hp and torque by switching out the muffler or going cat back. I don't mind a slightly low rumble but I don't want to be heard coming from a few blocks away. Any suggestions?

 

I have the Magnaflow cat-back and it is loud, but not deafening.
FF