About a month ago, I installed a 5" MagnaFlow turbo-back exhaust system. Overall, it's a little louder than I want, especially when getting into the throttle. Drone isn't terrible unloaded, but towing about 15,000 lbs., the drone is deafening from about 2000 - 2250 RPM's (only in 6th gear, though).

Anyway, I've been looking into the Donaldson/Nelson threads, but have found that the majority of them are for the long 44/51" mufflers. My only issue with this long of a muffler would be losing the use of one of the stock hangers if the muffler location isn't changed.

I've found a much shorter Nelson 201108N muffler that's 5" in/out, 9" diameter, and 22" body length (about 28" overall length).

Has anybody tried one of these short mufflers? I would expect the tone to get lower by going from the 7" diameter MagnaFlow muffler to a 9" diameter, but am not sure about noise levels with the 22" Nelson. At 22", it's probably about the same length as the MagnaFlow muffler, but I'd suspect it to be a little quieter.

Has anybody tried these shorter Nelson's? Also, information on Nelson's site is limited. Are these straight-through design, or baffled?

Thanks.

 

You are correct about the longer 51 inch mufflers. On the Quad cab, short bed the long 5 inch muffler does not fit without cutting the stock hanger. It is hard to find a 5 inch, 9 inch dia short muffler that will fit. I used a 5 inch, 8 inch dia resonator that was about 22 inch long. It was a straight thru design and fit nicely.

 

Thanks for the input. I haven't ordered the short Nelson yet, but I think I'm gonna give it a try. My wife absolutely HATES the MagnaFlow sound.

 

You'll probly find the Nelson 40" will be much quieter, that's what I used cept only 4" in/out.

 

Do they make a 40" w/ 5" inlet/outlet??

rodaniel, If you think she hates the 5" magnaflow as it is, make sure you dont strait pipe it or replace your turbo. Holy @#$% it gets worse!!!

 

Yup, lots of them.:
http://www.cumminsfiltration.com/fle...=Next&#results

Looks like a 86624M is 40"

 

Sorrydont worky.

 

Hmmmm, maybe....

http://www.cumminsfiltration.com/fle...fler_index.jsp

Click on type 1, should get a table, then clicking on "inlet #1 size" sorts by inlet size

(Why's it keep shortening my links?)

 

They dont show internal design, I'd want one if it was strait through. Is there a way to find out short of buying it and finding out the hard way?

 

Mine was stright through, seems to me its the Donaldson that have some kinda rain baffle or something (I think)