i have heard the 14 and it is not extremely loud but loud enough that it would get annoying on long trips. you have to adjust the radio to over compensate for it. I just installed the magnaflow catback system and very pleased with it.
It has what i call a grown-up growl. enough to let you know there is something there but not obnoxious. It sounds very well put together
I'm looking for something a little louder than stock so it looks like the 24 would be the way to go because Muffles says stock is a loudness of 2 on a 1-10 scale and the 24 is a 4. So I think that would do the trick. The 18 is a 7 and the 14 is a 9. I'm sure the 14 would be louder than I would want but not sure about the 18. How much noise is in the cab at cruising speed on the highway on any of these compared to the stock? I want to be able to comfortably talk to others in the cab with me.
I don't have much to say here so here it goes...... "_________________" enough said!
I have had my 18" Mufflex in for about a month now. I have driven to hell and back (9200 miles in 4 months) Love the sound. Just right for me. Nice rumble and don't even notice it in the cab. Sounds real good on start up and exceraration with a mild idol. I am still running my resonators. I imagine 14" would sound real good too but think the 24" would be too quiet.
CrewCab Sport*Sunroof* Navi*3.92's*Ground Force 2/3 drop*Back Flip F1*Mufflex 18"*BedTred
I went with the 18 inch mufflex. I am happy with the sound, but as far as everyone saying there is no drone, mine is bad. Usually everytime overdrive kicks in. If I downshift to fourth gear its fine. Also I now have a fluctuating low speed rpm. Any one else? I have no other mechanical mods whatsoever.