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03-02-2010, 05:51 PM | #1 |
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Dinan sound at idle vs OEM
For those that actually have the Dinan exhaust (rear section only), or have heard it first hand, please comment (for those that have heard it on Youtube, please DO NOT comment)
How much louder is the Dinan exhaust at idle vs the OEM at idle (assuming the initial 30 second rough-start is over with and the cats are warmed up)? Is it 10% louder, 20, 30%? I know it's one of the quieter exhausts out there, but I just want to better understand how it compares to OEM at idle. I know the "full" system including Dinan's midpipe really makes it sound better once you get around 4,000 rpm...but, I'm just looking for what it sounds like with the rear section only at this point. Thanks much. |
03-02-2010, 05:59 PM | #2 |
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Without measuring the db differnce between stock and Dinan I can't really give you a % of how much louder it is. However, the stock exhaust is very quiet at idle IMO, the Dinan is definately louder and adds more "bass" to the sound of the exhaust note. Heard it just yesterday when the SA drove it away for service. I personally love it and wouldn't want anything louder on this car. Again, JMNSHO
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03-02-2010, 06:28 PM | #3 |
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its hard to give a % but it is defininetly deeper of an exhaust note. If i had to guesstimate, i would say its 10% louder
-Scott
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03-02-2010, 06:35 PM | #4 | |
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Thanks Metak...good info. Much appreciated. I'm thinking this is the one for me...I will be doing a midpipe w/HFC's down the road, so I want a rear section that will compliment that nicely and not be too loud...sounds like Dinan is a good choice. |
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03-02-2010, 07:59 PM | #5 |
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I used Rear Section Dinan Exhaust previously and I would say about 20% louder than OEM Exhaust but I got Drone at 2100 - 2300 RPM. The drone was not as loud but quite bothering to my ear. I use Akraprovic Evolution Exhaust presently and I am very happy with the exhaust sound and no drone.
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03-02-2010, 08:04 PM | #6 | |
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03-02-2010, 08:15 PM | #7 | ||
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DINAN TECH SHEET: "Or it was possible to get good flow and a low frequency drone with 4 tailpipe tips, but it was impossible to get both. We considered using an external Helmholtz chamber like some companies have done. But this added additional weight and cost and was deemed unacceptable. Analyzing other after-market manufacturer’s mufflers revealed that they had all made a compromise because of these problems. Either they had high backpressure from keeping the BMW design or very loud low frequency drone with straight through twin muffler designs or heavy expensive exhausts with straight through designs and external Helmholtz chambers."
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03-02-2010, 08:20 PM | #8 |
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The right way to phrase that is: 'it drones the least'
![]() ![]() Since I'm so sensitive to drone (believe me, I know what it is), I decided to stay stock, and just painted the muffler black. Didn't want to buy blindly again, since every single time I've ended up selling my exhausts at a big loss. Good luck. |
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03-02-2010, 08:31 PM | #9 | |
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03-02-2010, 09:34 PM | #10 |
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Someone sell me their Dinan!!!
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03-03-2010, 02:37 AM | #11 | |
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i call BS i have the Dinan and there is no drone anywhere at any rpm ever, and i have the Dinan Midpipe on there as well and still no drone anywhere
out of the two if one would drone it would be the Akra Quote:
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03-03-2010, 02:39 AM | #12 | |
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you must have the hearing of a dog or something bc i have the Dinan and my hearing is good and i have no drone at all anywhere in the rpm range
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03-03-2010, 05:02 AM | #13 | |
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Safer to say they are the best two systems for people who are sensitive to drone. My wife thinks my exhaust is standard now as I had Fabspeed and Remus set up before, that trumps any other test IMO |
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03-03-2010, 10:20 AM | #14 |
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Happy with my DINAN mufflers, little louder than stock, maybe a touch too quiet for me though. Overall no regrets. the BMW techs that installed them thought they sounded like a Ferrari that they had been doing some work on. Not sure I fully agree but its an improvement over stock.
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03-03-2010, 02:35 PM | #15 | |
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![]() ![]() ![]() ![]() Last edited by elp_jc; 03-03-2010 at 02:42 PM. |
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03-03-2010, 03:22 PM | #16 |
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Can't say what % but it's noticeably louder but not annoying at idle with mean, rumble tone.
And before it's louder or not, first thing you notice is the different type of tone (mean, rumbling compare to gentle note from the stock). To me, I didn't want to go much louder exhaust but wanted to have better tone so I picked up Dinan.
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03-03-2010, 03:47 PM | #17 |
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Dinan axle-back exhaust owner here.
During cold startup, I'd estimate that the Dinan is 25% louder than stock. After the cold startup cycle is over and the car is idling smoothly, the Dinan is MAYBE 10% louder than stock. What you notice more than the change in volume is the change in tone. The Dinan is much deeper and has a more aggressive rumble. As far as drone, every exhaust I've ever heard for the M3, including stock, has it. It's simply a question of (1) how much and (2) where it occurs in the rev range. It's also a subjective issue that depends on the ear and tolerance of a particular person, which is why one person will say an exhaust drones and another says it doesn't. Like the stock exhaust, the drone on the Dinan is barely even noticeable (my wife, for example, didn't notice it) and not annoying. Also, like the stock exhaust, the drone on the Dinan does not occur at cruising speeds. In fact, the drone on the Dinan is so unobtrusive, I'd have no question recommending the Dinan even to those with the most sensitive ears (I'm one of them).
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03-04-2010, 02:19 AM | #19 | |
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i feel i am unbiased yes. of course it is louder then stock that is the whole point bc we want sound. i am talking about drone
i am sensitive to drone, i owned one set up that droned bad once on one of my cars and after that i said i will never have one that drones again bc i can't stand it and in my last 3 M cars i have had the Dinan set ups and have had no drone at all. and people who ride in my car can't believe that there is no drone in the cabin when it sounds that good outside the car, like a ferrari as one person put it. has a nice exotic tone to it and no drone everyone is different and may hear it different ways, so if you hear drone then i guess you got drone, i just know 99.9% of the people running the Dinan set up never hear drone take care Quote:
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03-04-2010, 02:20 AM | #20 | |
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+1, the Dinan rear is what should of come stock on the M3 from the factory
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