I have been looking at replacing my center muffler with a magnaflow, I know it has been done before but I have been reading up and have found 2 different magnaflows used... 12256 and 11226. The 11226 is cheaper by $12 but it is 4x9" and 14" body length. The 12256 is 5x8" and 18" body length.

Both are 2.5" inlet and outlet diameter.

Which one should I purchase?

 

The shorter muffler will be louder. At the end of the day it depends on personal preference. I personally would go with the longer one judging by the Borla Pro XS on my truck. It's a 19" body and made plenty of noise when I still had the stock setup with Magnaflow cats.

 

Both of those will be pretty loud.

 

I run the 11226 on 3 of my LR's it is not loud at all like a Flowmaster. I have all my resonators removed as well. Under WOT yes it's very much a V8. At idle, or at normal cruising speed/RPM's it sounds very nice.

 

Larger Magnaflow with resonator delete. That's what I got, no drone. Like best4x4 said, it comes alive under pedal.

 

Ok great. Think I'll grab the 12256

 

One advantage of the smaller one is it makes access to the ebrake assembly much easier to deal with.