im thinking about getting a magnaflow muffler, but i am having trouble trying to figure out what size/offset to get. any one know off the top of their head the size/shape/offset of muffler needed on an 05 crew v8 4x4?

 

I have the same truck. The original muffler is 31" long.

I replaced it with a Magnaflow Part No. 12586, 5" x 11" oval which is 22" long.

It is an offset muffler with 2.5" inlet and outlet.

I dumped BOTH "resonators" and REALLY like the sound, but of course everybody's different.

It sounds neat when you get on it but has a "drone" when pulling but quiet out on the highway at 75 mph and around 2200 rpm in overdrive.

It sounds great at 2000 rpm around town in second gear.

It's a "shot in the dark" when doing this as everybody has different tastes in sound.

I am totally satisfied with this setup.

 

I was just looking into this myself. The piping is 2.5 in/out, inlet/outlet opposite sides. I picked up Magnaflow #12256, haven't put in in yet, sure hope I'm right. Anyone else...

 

Its all in ur taste my man. if u were near my in Jersey i would let u hear my Gibson system stock headers and the 2 cats but the guy before me took out the 3rd cat and has a stright pipe to the Gibson muffler then its dual out i like it when i get to 70 mph cuz its loud!!! and yes poping it into 2nd or first is my fav to when coming up to a light it crackles more then a 5.7 hemi hehehe. im sure what ever u pick its going to be alot better then stock.

 

I took out everything except the cats after the headers and put in the thrush muffler. It had terrible resonance at first but it either broke in or when i installed the superchips tuning it made it quieter some how because you can barely notice it in the cab now...I get compliments all the time from people on how it sounds.(and yes...turning your head as I drive by is considered a compliment too.)

 

ahh but the trick is to have ppl turn there heads before ur even near them when u get like that its a great feeling when u see the jaws drop from a dakota.

 

Great feedback! Thanks!

3rd Cat?

 

isnt there another cat? i plug in my ob2 sensor and there it pop up 3 cats just one reads 0

 

2 cats and 4 O2's

Where in NJ are you?

 

ND Dakota thanks for the response, anyway you can post a sound clip of your setup? i was thinking about just taking out the resonator after the muffler.. also do you have dual exhaust ?