Especial86

iTrader: (1)

3" is stock on these trucks, the only way you can lose scavenging is by doing true duals without an H or X pipe to complement... Back pressure will always be there with a y pipe, which you have already.... If you delete the rear cats and do a dual exit muffler, you should doing better then stock on towing.... A intake or gotts mod will compleat the package for more breathing room, and if you tow a lot then a tuner like an edge or an sct will unlock all that new found potential.

Seth

3in is not stock in these trucks it's 2.5. And all I run are magna's. They sound the best in my opinion if you want deep.

otto457

3" simply moves the powerband up a slight bit. Read the link in my sig for all the information on "backpressure" and why you shouldn't worry about it.

Notch46

When I did my 3" si/so muffler and tail pipe I didn't notice any loss of low end torque. So you will be fine.

Especial86

iTrader: (1)

3" is the stock y pipe, after the front 2 1/2 pipes leading into it from the cats and exhaust manifold.

otto457

The 04-08 trucks have 2.5" going into the Y and after is 2.5" single going out stock.

Tradesman

I have a Dynomax on mine, but I'm going to turf it eventually and go with either a Borla or a Corsa. At the moment it's louder than my Hemi but it doesn't sound anywhere near as nice. And my Ram is stock.

Especial86

iTrader: (1)

Just double checked and your right. My mistake.... Im so used to seeing my 3" butt weld at the y pipe. It almost looks like it was always 3" coming out of the Y.....
My apologys to Seth for correcting you.

Seth

No worries. I wasn't gunna raise a fuss about it.

country_boy2835

I have the same set up as Especial86 except the cats are still intact due to Ohio's emissions. Your sound clips are actually the reason that I went with that setup...it sounds awesome! In all honesty though, the 18" isn't all that loud. It sounds great on start-up, but it quiets down a lot when warm. If I had to do it again, I might go with the 14".