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How to cut down drone on highway - loudmouth

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Old Aug 31, 2006 | 02:25 PM
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Default How to cut down drone on highway - loudmouth

Just wondering what the best way to cut down highway drone would be. At about 2100-2500 RPM the drone in the car from the exhaust is loud and I want to try to cut it down some. The noise doesnt bother me with regular driving, but on the highway it is constant. Wondering if a bullet muffler will help cut down on the drone or not. What is the best way to solve my problem without switching exhaust setups totally? THANKS
-Mike
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Old Aug 31, 2006 | 02:30 PM
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The muffler from the LM2 system is more forgiving in the drone department. Especially if you are running stock cats and manifolds.
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Old Aug 31, 2006 | 02:38 PM
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forgot to mention that, running stock cats and manifolds, so no issues there - I am curious if a bullet muffler will take care of my problem or if I should look more into sprial flow mufflers which offer more noise control.

Last edited by MjMaro; Aug 31, 2006 at 02:44 PM.
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Old Aug 31, 2006 | 03:22 PM
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I don't know from personal experience but a lot of people seem to go with a magnaflow bullet or dynomax bullet. You may want to look into it a little more if you are looking for something like a spiral flow or powerstick.

I don't think the noise in the loudmouth is that loud. My buddy had his LMI installed a while back and I was seriously expecting it to be a lot louder and annoying.
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Old Aug 31, 2006 | 03:28 PM
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earphones...

But in all seriousness I have it too and I just kinda have to deal with it. I bought a dynomax bullet muffler that we be installed when the new headers and Y go in so Im thinking that should help a lot.
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Old Aug 31, 2006 | 03:29 PM
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My loudmouth would drone like crazy on the highway. I elminated it with a second bullet in the I-pipe. This was like 4 years ago, so there are many more setups.
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Old Aug 31, 2006 | 03:47 PM
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Thanks for all the comments, orange- you seem to have dealt with the same problem that I am, can you describe your setup in a little more detail?
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Old Aug 31, 2006 | 04:02 PM
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Well since your a A4 your gonna have more issues with drone than most. You might just have to switch to the LMII. I think it sounds better than the LMI anyway.
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Old Aug 31, 2006 | 05:35 PM
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I had the Loudmouth for two years and the drone on the highway drove the wife and I nuts, I also have cats. I put the Hooker catback system on and we love it. We just got back from a 900 mile road trip down the Oregon coast, we are talking no exhaust noise inside the car, but you can still hear the rumble outside. Sounds like an iron block motor at part throttle, very stealthy.

IMO I would get rid of the LM.
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Old Aug 31, 2006 | 06:09 PM
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I switched the bullet to the Borla XR-1, got rid of the drone completely at 2000 rpms. At 1500 it's slightly there but not as annoying as before since it's deeper and less raspy.
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Old Aug 31, 2006 | 07:20 PM
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Turn up the radio!! Though the drone didn't bother me, when ever i was on the phone people would think i was playing a video game, guess they could hear the exhaust over my voice... ::shrug::
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Old Aug 31, 2006 | 08:12 PM
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best way to fix it is to put your stock cat-back back on.

I put a borla XR-1 on mine and fixed it right up. In fact, I have an extra XR-1. If you are interested in it, send me a pm.
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Old Aug 31, 2006 | 11:13 PM
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Does anyone know anything about spiral flows being used in place of the resonator? Looks like my best bet is going to be the Borlamouth.
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Old Aug 31, 2006 | 11:21 PM
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The diameter of the XR1 is to much. I had one put on but I could see it hanging low and looked tacky from a distance, it doesn't tuck up in there at all. It sounded good though.
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Old Sep 1, 2006 | 10:01 AM
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every one that has true duals always talks about the drone? i dont get it, so when ur driving theres like a dead noise or somthing at sertain RPM?
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Old Sep 1, 2006 | 10:50 AM
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The drone has to do with the volume/tone of the exhaust. You get a noise that just sort of drowns everything else out (music, girlfriend in passenger seat). It doesn't bother me at all except on the highway making trips of 150 miles. Around town it doesn't drone because you aren't holding a specific RPM for very long but on the highhway it is a different story. I suppose it can be likened to the sound of the engines while you are on an airplane, an LS1 airplane Still thinking the XR-1 is my best bet unless someone else can offer me some better advice, thanks
-Mike
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Old Sep 1, 2006 | 07:50 PM
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not sure how u would get the drone to go away. u could always swtich with a cutout.
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Old Sep 1, 2006 | 09:13 PM
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The drone is kinda like a bunch of bees. Its a very deep HUMMM. You can feel it in your chest. When you are running at a steady 1700-2100 RPM, you can feel it and you cant hear anything else. I either have to drop it into 5th or just speed up to like 70-75mph. Its not unbearable, just annoying.
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Old Sep 1, 2006 | 09:25 PM
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Originally Posted by Fast Eddie's 02 T/A vert.
The diameter of the XR1 is to much. I had one put on but I could see it hanging low and looked tacky from a distance, it doesn't tuck up in there at all. It sounded good though.
Not sure why you had so much trouble with it. Mine tucked up very nice with minimal effort
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Old Sep 2, 2006 | 07:26 AM
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Originally Posted by Fast Eddie's 02 T/A vert.
The diameter of the XR1 is to much. I had one put on but I could see it hanging low and looked tacky from a distance, it doesn't tuck up in there at all. It sounded good though.
Uh, OK. Not sure if you had it installed correctly... The Borla XR-1's diameter isn't much more than the LM resonator. Mine tucks up nicely and the difference in sound quality is a 200% improvement.
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