Reduced Drone w/ Cobb vs Dinan Stage 2

Ghoti · 11-20-2011, 11:07 PM

I thought I'd share my experience on the difference in drone between two tunes.

I had a Dinan Stage 2 tune with BMS DCI and catless AE exhaust (stock DPs). The drone at around 1800-2300 rpm was noticable in the city. When on the highway going up even a gradual incline within this rpm range, the drone became unbearable to the point of shifting to keep the car above 2300.

I just installed a COBB, and damn, where did the drone go? The moderately louder exhaust noise (from stock) is there, but the drone in the low rpm range is almost unnoticable.

I read in other posts about some who said they had minimal or even no drone with their exhaust systems, and I found it hard to believe with what I was hearing with my former tune. Now I believe them!

(Sorry, no sound clips of the Dinan drone.)

Brey335i · 11-20-2011, 11:31 PM

Drone is heavily tune related in my experience. I drone a lot more with COBB than Procede. It's all in the wastegate positions I believe...

Ghoti · 11-21-2011, 10:15 PM

Interesting. I've heard so much discussion on how to reduce drone by different exhausts, adding high-flo cats (to a catless system) or Vibrants resonators (more for rasp than drone) ... but I haven't heard that tunes are another option.

Brey335i · 11-21-2011, 10:23 PM

Quote:

Originally Posted by Ghoti

Interesting. I've heard so much discussion on how to reduce drone by different exhausts, adding high-flo cats (to a catless system) or Vibrants resonators (more for rasp than drone) ... but I haven't heard that tunes are another option.

If this was an NA car I'd be inclined to agree that exhausts and cats and stuff are all that count, but the wastegate position really accounts for a massive portion of the sound of an exhaust.

Ghoti · 11-21-2011, 10:33 PM

Quote:

Originally Posted by Brey335i

If this was an NA car I'd be inclined to agree that exhausts and cats and stuff are all that count, but the wastegate position really accounts for a massive portion of the sound of an exhaust.

Good to know. Thanks for the info.

Brey335i · 11-21-2011, 10:39 PM

Just for the record. I wouldn't choose a tune based on drone lol. If you go with Procede, JB4, COBB, GIAC you're good to go... even Dinan. Just make sure you choose the right exhaust for your needs

secretsquirrel · 11-21-2011, 10:44 PM

Quote:

Originally Posted by Brey335i

It's all in the wastegate positions I believe...

That's my guess as well.

RoundelM3 · 11-22-2011, 09:32 AM

I have Dinan Stage 2 and a Dinan free-flow exhaust - no drone thus far, but the exhaust has a much deeper tone than when I had the stock mufflers on. That said, I had the latest DME software update for early 07 E92s applied and then had my Dinan reflashed over that. The newer BMW software supposedly does something with wastegate positioning to avoid rattling at idle and low speeds, but I'm not certain it makes that much difference.

Syndicategt · 11-22-2011, 10:43 AM

Quote:

Originally Posted by Brey335i

Drone is heavily tune related in my experience. I drone a lot more with COBB than Procede. It's all in the wastegate positions I believe...

It's all about the WG position. Set the V5 WG position to 30% and it will sound like stock (or a COBB is on the car).

Bullet · 11-22-2011, 03:11 PM

Hmm thats interesting, i actually experienced more drone with cobb. Unlike most people on the forum the drone doesn't bother me

Ghoti · 11-22-2011, 10:43 PM

Quote:

Originally Posted by Bullet

Hmm thats interesting, i actually experienced more drone with cobb. Unlike most people on the forum the drone doesn't bother me

Just curious ... did you have another tune before compared to which the COBB has more drone? I think there is more drone with COBB than stock (and it's louder anyways), but less than the Dinan. Regardless, as long as you're happy with your setup, that's all that counts!

loki7177 · 11-23-2011, 07:34 AM

I have a Vanguard exhaust with a JB+, DCI, and stock DP. The drone at 1800-2300 RPM on the highway is a little annoying to say the least. I will be receiving my Cobb today. I think I will be more excited about it reducing drone then the performance increase. I'll report my findings.

nitehawk · 11-23-2011, 09:20 AM

I also have the AE catless exhaust with catless DPs. I used to have Dinan S2. Although, I did not find the drone to be that noticeable to begin with, I can attest that there is virtually no drone with Cobb S2. As others have mentioned, it probably has to do with the higher boost levels and wastegate adjustments respectively.

Bullet · 11-23-2011, 12:34 PM

Quote:

Originally Posted by Ghoti

Just curious ... did you have another tune before compared to which the COBB has more drone? I think there is more drone with COBB than stock (and it's louder anyways), but less than the Dinan. Regardless, as long as you're happy with your setup, that's all that counts!

Nope Cobb is my first tune, but thinking on it now, my vanguard exhaust just likes to drone in general haha

Brey335i · 11-23-2011, 12:42 PM

Vanguard just likes to make sure other motorists know you're there

vasillalov · 11-23-2011, 03:03 PM

Quote:

Originally Posted by Brey335i

Vanguard just likes to make sure other motorists know you're there

AE catless is the same, but only if you put your foot down. Otherwise its bit docile when cruising. Its the best of both worlds....

joehoang · 11-23-2011, 06:43 PM

Anyone have AT and running PROcede with AE and AR dps? I want to get the AE exhaust but I'm afraid the drone will be bad running catless. I wonder how much drone can be reduced on AT cars by messing with the WG.

Bullet · 11-24-2011, 12:22 AM

Quote:

Originally Posted by Brey335i

Vanguard just likes to make sure other motorists know you're there

Added safety feature really

loki7177 · 11-24-2011, 08:48 AM

I installed the Cobb yesterday and took it out for a spin this morning. The droning hasn't changed one bit vs the JB+.

The Vanguard isn't that loud to me. Granted I haven't heard any other aftermarket exhaust on 335i's in person. The drone is bearable for now but was hoping to experience the same as the OP.

ilumo · 11-24-2011, 06:52 PM

Quote:

Originally Posted by loki7177

I installed the Cobb yesterday and took it out for a spin this morning. The droning hasn't changed one bit vs the JB+.

The Vanguard isn't that loud to me. Granted I haven't heard any other aftermarket exhaust on 335i's in person. The drone is bearable for now but was hoping to experience the same as the OP.

You just need to drive faster

Ghoti · 11-24-2011, 11:11 PM

Quote:

Originally Posted by nitehawk

I also have the AE catless exhaust with catless DPs. I used to have Dinan S2. Although, I did not find the drone to be that noticeable to begin with, I can attest that there is virtually no drone with Cobb S2. As others have mentioned, it probably has to do with the higher boost levels and wastegate adjustments respectively.

Good to know you've have the same experience, espeically w/ S2. I've got my catless DPs and FMIC ready to be installed to I can move up to S2.

Ghoti · 11-24-2011, 11:14 PM

Quote:

Originally Posted by loki7177

I installed the Cobb yesterday and took it out for a spin this morning. The droning hasn't changed one bit vs the JB+.

The Vanguard isn't that loud to me. Granted I haven't heard any other aftermarket exhaust on 335i's in person. The drone is bearable for now but was hoping to experience the same as the OP.

Sorry to hear there wasn't a decrease. Hope you enjoy the power, tho!

11-20-2011, 11:07 PM	#1
Ghoti Second Lieutenant 9 Rep 289 Posts Drives: 335i Join Date: Aug 2011 Location: Toronto iTrader: (0)	Reduced Drone w/ Cobb vs Dinan Stage 2 I thought I'd share my experience on the difference in drone between two tunes. I had a Dinan Stage 2 tune with BMS DCI and catless AE exhaust (stock DPs). The drone at around 1800-2300 rpm was noticable in the city. When on the highway going up even a gradual incline within this rpm range, the drone became unbearable to the point of shifting to keep the car above 2300. I just installed a COBB, and damn, where did the drone go? The moderately louder exhaust noise (from stock) is there, but the drone in the low rpm range is almost unnoticable. I read in other posts about some who said they had minimal or even no drone with their exhaust systems, and I found it hard to believe with what I was hearing with my former tune. Now I believe them! (Sorry, no sound clips of the Dinan drone.) __________________ SG e92 335i 6MT / Pure Stg2 DD / JB4 + MHD BEF / ETS FMIC / Dinan CAI / AR DPs / Stage 2 LPFP / Spec 3+ / Spec SMFW / MFactory LSD / KW V2 SCs / Vibrant 1792s e36 M3 ... gone but not forgotten
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11-20-2011, 11:31 PM	#2
Brey335i Banned 112 Rep 4,771 Posts Drives: e46 ///M3 Join Date: Oct 2009 Location: Austin, TX iTrader: (11)	Drone is heavily tune related in my experience. I drone a lot more with COBB than Procede. It's all in the wastegate positions I believe...
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11-21-2011, 10:15 PM	#3
Ghoti Second Lieutenant 9 Rep 289 Posts Drives: 335i Join Date: Aug 2011 Location: Toronto iTrader: (0)	Interesting. I've heard so much discussion on how to reduce drone by different exhausts, adding high-flo cats (to a catless system) or Vibrants resonators (more for rasp than drone) ... but I haven't heard that tunes are another option. __________________ SG e92 335i 6MT / Pure Stg2 DD / JB4 + MHD BEF / ETS FMIC / Dinan CAI / AR DPs / Stage 2 LPFP / Spec 3+ / Spec SMFW / MFactory LSD / KW V2 SCs / Vibrant 1792s e36 M3 ... gone but not forgotten
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11-21-2011, 10:39 PM	#6
Brey335i Banned 112 Rep 4,771 Posts Drives: e46 ///M3 Join Date: Oct 2009 Location: Austin, TX iTrader: (11)	Just for the record. I wouldn't choose a tune based on drone lol. If you go with Procede, JB4, COBB, GIAC you're good to go... even Dinan. Just make sure you choose the right exhaust for your needs
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11-22-2011, 09:32 AM	#8
RoundelM3 Major General 1837 Rep 6,990 Posts Drives: 15 F80 M3, 22 G01 X3 30i Join Date: Apr 2010 Location: Clayton, NC iTrader: (2) Garage List 2022 BMW X3 [9.83] 2015 BMW M3 [6.50]	I have Dinan Stage 2 and a Dinan free-flow exhaust - no drone thus far, but the exhaust has a much deeper tone than when I had the stock mufflers on. That said, I had the latest DME software update for early 07 E92s applied and then had my Dinan reflashed over that. The newer BMW software supposedly does something with wastegate positioning to avoid rattling at idle and low speeds, but I'm not certain it makes that much difference. __________________ 2015 F80 ///M3 Sedan 7DCT Tanzanite, 2022 X3 sDrive30i 8AT Brooklyn Grey
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11-22-2011, 03:11 PM	#10
Bullet Major 55 Rep 1,069 Posts Drives: 09 e92 335i Join Date: Apr 2009 Location: So cal iTrader: (6)	Hmm thats interesting, i actually experienced more drone with cobb. Unlike most people on the forum the drone doesn't bother me __________________ Cobb // Helix // BMS // E9X Picture game: 1
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11-23-2011, 07:34 AM	#12
loki7177 Private First Class 4 Rep 111 Posts Drives: e90 Join Date: Oct 2011 Location: NYC/LI iTrader: (3)	I have a Vanguard exhaust with a JB+, DCI, and stock DP. The drone at 1800-2300 RPM on the highway is a little annoying to say the least. I will be receiving my Cobb today. I think I will be more excited about it reducing drone then the performance increase. I'll report my findings.
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11-23-2011, 09:20 AM	#13
nitehawk Lieutenant Colonel 102 Rep 1,903 Posts Drives: e92 335i 6MT Join Date: May 2011 Location: Toronto iTrader: (15) Garage List E92 BMW 335i [9.00] E92 BMW 335i \| Retired [10.00]	I also have the AE catless exhaust with catless DPs. I used to have Dinan S2. Although, I did not find the drone to be that noticeable to begin with, I can attest that there is virtually no drone with Cobb S2. As others have mentioned, it probably has to do with the higher boost levels and wastegate adjustments respectively.
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11-23-2011, 12:42 PM	#15
Brey335i Banned 112 Rep 4,771 Posts Drives: e46 ///M3 Join Date: Oct 2009 Location: Austin, TX iTrader: (11)	Vanguard just likes to make sure other motorists know you're there
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11-23-2011, 06:43 PM	#17
joehoang First Lieutenant 40 Rep 374 Posts Drives: E92 335i Join Date: Nov 2010 Location: Houston, TX / Hayward, CA iTrader: (3)	Anyone have AT and running PROcede with AE and AR dps? I want to get the AE exhaust but I'm afraid the drone will be bad running catless. I wonder how much drone can be reduced on AT cars by messing with the WG. __________________ Morr MS8/ HPF FMIC anodized/ Cobb AP/ ar Catless Dp/ Quaife LSD/ M3 control arms/ STETT CAI/ STETT Chargepipe w. Synapse BOV/ ar OCC/ Bilstein b16/ OEM Front Lip/ M3 Lip Spoiler/ P3 Vent gauge V2/ Black Kidney grille/ Ls3/ Mtech rear/ LCI Euro Tail lights/ 3d design quad diffuser/ BMW performance exhaust w/quad tips/ BMW performance front splitter/ Huper Optik Drei
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11-24-2011, 08:48 AM	#19
loki7177 Private First Class 4 Rep 111 Posts Drives: e90 Join Date: Oct 2011 Location: NYC/LI iTrader: (3)	I installed the Cobb yesterday and took it out for a spin this morning. The droning hasn't changed one bit vs the JB+. The Vanguard isn't that loud to me. Granted I haven't heard any other aftermarket exhaust on 335i's in person. The drone is bearable for now but was hoping to experience the same as the OP.
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