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  #21  
Old January 10th, 2011, 01:46 AM
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Quote:
Originally Posted by Shearpin View Post
Any updates from folks living with straight through exhausts. I use my 110 for longer distance trips with the wife and kid. This past weekend the tailpipe separated from the rear silencer. I am thinking about removing the centre and rear silencers and having some stainless run straight back. I am hoping to avoid highway drone and excessive noise on the trail....

Henry


Turn your speakers all the way up. If you can live with that on the freeway for long trips, your fine.

It may depend on what your wife is like.
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  #22  
Old January 10th, 2011, 08:23 AM
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I still have no noise issues with mine, even on the highway.
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  #23  
Old January 10th, 2011, 11:08 AM
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I use a walker dynomax SS muffler. You can see straight through it though it takes a slight jog to one side. Basically the equivalent of a 5 or 10 degree bend in the pipe. It is effectively the same as a straight through job. No idea how it compares to a straight pipe system in noise level. Above 55mph I can't really hear it anymore, except when I'm riding next to a jersey barrier or in a tunnel.
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  #24  
Old January 17th, 2011, 06:45 PM
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No muffler, sounds fine to me:
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  #25  
Old January 18th, 2011, 02:07 AM
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just curious but are any of you guys running cats in your diesel defenders?
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  #26  
Old January 18th, 2011, 04:37 AM
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I removed the centre box on my defender 110 200tdi (cut it out and welded a bit of pipe in its place). It had the marginally smaller 2inch (19J) turbo diesel exhaust on it. Silencer removal was just a cheap way of seeing if there were performance gains to be had before actually spending any money. Acceleration was much better, top end was improved as well, however, contrary to most reports i had read, it was noisier especially on the motorways. So i bit the bullet and had a larger bore (2.5inch) stainless system fitted with two silencers. Performance is as it was without the centre pipe but it is much quieter!
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  #27  
Old January 18th, 2011, 01:31 PM
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300tdi with the cat still on, 2.5" straight pipe, noise is not an issue with mine..
I am going to remove the cat in hopes of lowering the egt's with out having to reduce the fuel settings..
normal driving at 70mph with 285's and the 1.4 see's me at 800-1000 f ( piro is located where the egr valve was)
put more load like a head wind and it will quickly climb to 1150+ but has no prob holding speed, just gets the egt's warmer then i would like to see.
What kind of egt reduction would one hope to get by removing the cat?
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  #28  
Old January 18th, 2011, 01:54 PM
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Quote:
Originally Posted by Ren Ching View Post
except when I'm riding next to a jersey barrier or in a tunnel.
Don't you love the sound next to a barrier?
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  #29  
Old January 18th, 2011, 02:03 PM
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Straight through for me in the 110, on teh 90 too No issues. It really screwed up my fuel economy though!
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  #30  
Old January 18th, 2011, 02:11 PM
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Straight through for me in the 110, on teh 90 too No issues. It really screwed up my fuel economy though!
Fun pedal get stuck to the floor?
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  #31  
Old January 18th, 2011, 03:10 PM
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Fun pedal get stuck to the floor?
It sure sounds cool when you mash that there skinny pedal!
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  #32  
Old January 18th, 2011, 05:48 PM
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Loud pipes save lives. Oh, wait. Wrong forum.
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  #33  
Old January 19th, 2011, 12:04 PM
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Ran with the cat only and stock turbo until a couple of years ago.
Then I got rid of the cat too.
Nice sound, but my ears were sore after the 3 1/2 hrs trip to the countryside (usually forth and back during weekends).
As to performance, it felt a bit sluggish.

Then I got an Equipe mid-silencer, which reduced the noise a bit and engine felt better.
Then came the VNT and I don't know anymore.


I'd like to make it straight-through again just for the love of that sound...
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  #34  
Old April 15th, 2015, 06:43 PM
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Heading to the muffler shop in town this Friday and I keep debating on what to do. I have a decat pipe and I was thinking of finishing it with 2.5" pipe and have no muffler or silencer. But, to get most anywhere out here you are hours in the seat and usually I just roll with the surrey top. I'm tempted to see what it's like without anything and then add something later if needed. But I keep going back and forth.
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  #35  
Old April 15th, 2015, 06:58 PM
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Quote:
Originally Posted by Broncoduecer View Post
Heading to the muffler shop in town this Friday and I keep debating on what to do. I have a decat pipe and I was thinking of finishing it with 2.5" pipe and have no muffler or silencer. But, to get most anywhere out here you are hours in the seat and usually I just roll with the surrey top. I'm tempted to see what it's like without anything and then add something later if needed. But I keep going back and forth.
I never looked back after removing the muffler. It sounded better and I am sure the motor "breathed" a little better too.
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  #36  
Old April 15th, 2015, 07:25 PM
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On my LWB, I ran 3" after the junction.
Too loud.
I don't know if it is the diameter or the length or the two combined but the harmonic distortion was... none too subtle.
Uncle Douglas followed me down the interstate and he could hear the drone a 1/2 mile back and can testify to the brutality.
YMMV.


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  #37  
Old April 15th, 2015, 07:57 PM
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It definitely helps the engine breath and drops egts. I have just a straight through resonator only. No muffler Don't go larger that 2.5"
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  #38  
Old April 15th, 2015, 09:17 PM
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Quote:
Originally Posted by TDI Guy View Post
It definitely helps the engine breath and drops egts. I have just a straight through resonator only. No muffler Don't go larger that 2.5"
exactly what I used to have, dB was negligibly different
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  #39  
Old April 15th, 2015, 09:35 PM
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I have a 2.5" straight pipe (no cat) behind my Tdi and I love the sound. Don't listen to Briggs, as that's just his feminine side talking.
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  #40  
Old April 15th, 2015, 09:41 PM
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edit......

------ Follow up post added April 15th, 2015 09:42 PM ------

edit...edit

------ Follow up post added April 15th, 2015 09:43 PM ------

edit...edit
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