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Old 11-21-2014, 10:05 AM   #15
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Originally Posted by TMan59 View Post
Well I do appreciate the info about the air cleaner.
I will look into this and just may be going back to paper.

We also have a sayin, Seemed like a good idea at the time!

I do like the Aero muffler.
What you want is a filter that has very near 99.9 efficiency from the start
not down the road several thousand miles.
Here is a link from K&N that states their filters cumulatively start at
96% and sometime after that may reach 99%.
Their meaning of cumulative is not stated.
Almost the last few lines in this information are the important ones

K&N Air Filter Efficiency Testing
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Old 11-21-2014, 05:02 PM   #16
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Quote:
Originally Posted by wb7auk View Post
What you want is a filter that has very near 99.9 efficiency from the start
not down the road several thousand miles.
Here is a link from K&N that states their filters cumulatively start at
96% and sometime after that may reach 99%.
Their meaning of cumulative is not stated.
Almost the last few lines in this information are the important ones

K&N Air Filter Efficiency Testing
I really do appreciate the info.

It's an easy change back.
Many thanks
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Old 11-21-2014, 07:20 PM   #17
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Originally Posted by TMan59 View Post
I really do appreciate the info.

It's an easy change back.
Many thanks

TMan,

I've got to give you an "atta boy" for being willing to listen to some folks who have done the research. I will admit that I agonized for a while before I posted initially about the dangers of this filters. So many owners take it as a personal attack if a subject like this comes up. None of us are born knowing about this stuff and I depend on the knowledge of the good folks on these forums to keep me out of trouble.


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Old 11-22-2014, 08:00 AM   #18
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Thanks Steve.
I will, in most cases, research these things.
In this case we put the muffler on and the air filter deal came up.
"Hey it will breath better with the new filter also".
Made sense at the time.

I appreciate the help.
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Old 11-22-2014, 08:26 PM   #19
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Ask About Muffler

Turns out to be about filter
how did that happen
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Old 11-23-2014, 09:38 AM   #20
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Turns out to be about filter
how did that happen
That was my fault.
It went that way after I said I put the filter on at the same time as the Aero muffler.
apologies.
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Old 11-25-2014, 11:52 PM   #21
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I installed the Aero muffler on our Mandalay with the Cummins ISL.

BIG MISTAKE. Way too loud, both inside and outside the coach. Talk about DRONE!

I am about to install a 4" in/out resonator aft of this muffler, which should quiet it down to an acceptable level again. I wish I had just left the stock Freightliner muffler on it.
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Old 11-26-2014, 06:53 PM   #22
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Rich

Did you not buy the one with resonator
build end
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Old 11-27-2014, 11:33 PM   #23
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I installed the Aero Turbine model 5050XL. Based on the way it sounds, it must not have a resonator built in.
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Old 11-28-2014, 06:55 AM   #24
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I installed the Aero Turbine model 5050XL. Based on the way it sounds, it must not have a resonator built in.

I'm surprised at your results. All the comments I have read concerning the Areo would have led me to believe that it's just slightly louder than stock and certainly not obnoxious. It there any chance it's installed backward? I understand they are not marked inlet/outlet and I understand it makes a difference in sound level.


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Old 11-28-2014, 07:02 AM   #25
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Aero

I just got mine the other day have not
put it on yet but mine is mark.
I would think it would have to one way.
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Old 11-28-2014, 08:07 AM   #26
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It is very loud when in a pull. 400Isl
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Old 11-28-2014, 10:00 AM   #27
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Originally Posted by wb7auk View Post
What you want is a filter that has very near 99.9 efficiency from the start
not down the road several thousand miles.
Here is a link from K&N that states their filters cumulatively start at
96% and sometime after that may reach 99%.
Their meaning of cumulative is not stated.
Almost the last few lines in this information are the important ones
K&N Air Filter Efficiency Testing
The oil filled car filter in your link is not the same built as a commercial grade non oil filled HD K&N Diesel filter.

COMMERCIAL GRADE DIESEL AIR FILTER WARRANTY
K&N commercial grade air filters have a 3 years or 300,000 mile limited warranty.
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Old 11-28-2014, 10:32 AM   #28
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Originally Posted by Triker56 View Post
The oil filled car filter in your link is not the same built as a commercial grade non oil filled HD K&N Diesel filter.

COMMERCIAL GRADE DIESEL AIR FILTER WARRANTY
K&N commercial grade air filters have a 3 years or 300,000 mile limited warranty.
Notice in your link there is no mention of the tested efficiency spec's
every wonder why?
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