Akra Evo Drone?

dadealus · 10-25-2012, 09:43 PM

Installed the Akrapovic Evolution exhaust. I heard this system has little to no drone. Yet at 2k and at 3k RPMs I am getting seriously hardcore brain humming drone. any ideas?

The video doesn't really capture how much the drone dominates the cabin but you can kind of hear the difference.

you can even hear where the drone disappears once the revs drop below 2800ish

BMRLVR · 10-25-2012, 09:55 PM

Quote:

Originally Posted by dadealus

Installed the Akrapovic Evolution exhaust. I heard this system has little to no drone. Yet at 2k and at 3k RPMs I am getting seriously hardcore brain humming drone. any ideas?

The Akrapovic Evolution is one of the mildest full systems made for the E9X M3. Sound levels are a subjective thing so you may be a person who has a sensitive ear to volume. You may have to go back to the stock system because I doubt that you are going to find a quieter full system.

onnex · 10-25-2012, 10:00 PM

yeaa, if you think the evo has bad drone.. then I dunno what to say. It's for sure one of the more mild systems– maybe just an axel back is the route for you.

dadealus · 10-25-2012, 10:02 PM

Quote:

Originally Posted by BMRLVR

The Akrapovic Evolution is one of the mildest full systems made for the E9X M3. Sound levels are a subjective thing so you may be a person who has a sensitive ear to volume. You may have to go back to the stock system because I doubt that you are going to find a quieter full system.

I have no problem with the sound levels of the system from 2100-2800 and from 3100-8700. yet when the car settles into the 2k and 3k ranges it produces a sound in the cabin when the windows are up that drills right into your skull. even when the radio is up at about 70% volume you can still feel this overwhelming hum. unfortunately when driving at 80MPH on the highway (3krpm on auto) and 55mph on the side roads (2krpm on auto) driving the car becomes a complete annoyance not because of volume, but a mind drilling hum.

aus · 10-25-2012, 10:41 PM

Either you're way to sensitive or something is wrong with the install. It's not loud at all inside the cabin. It's pretty loud outside when the engine is cold.

Try a race exhaust and then you'll see what drone is.

TheDeliverator · 10-25-2012, 10:47 PM

I'd suggest attempting to find another M3 in VA equipped with same setup and a ride in the passenger seat. If you do not hear the same level of drone, you will know the issue is specific to your system\install.

Rshane · 10-25-2012, 11:07 PM

Dumb question, but are you sure you got the Akra Evolution system and not the Akra GT4?

F16RCE · 10-26-2012, 02:38 AM

My Akra evo ystem definetly doesnt drone at all. Had it for 14 months and my only complaint is lack of volume when not under hard thottle... Get it checked out...

slicer · 10-26-2012, 02:53 AM

I would call myself sensitive to drone and I have not considered Akra Evo to be "droney". It's not stock quiet and I can't hear any drone in your video. As others have said it's subjective and you should try and find another car with the same system to determine if yours is out of the ordinary. Best of luck.

BLACK OPS · 10-26-2012, 04:08 AM

Could this be that you're breaking in both the car and exhaust at same time? I would expect the exhaust to get louder even as you break it in.

dadealus · 10-26-2012, 06:29 AM

Quote:

Originally Posted by BLACK OPS

Could this be that you're breaking in both the car and exhaust at same time? I would expect the exhaust to get louder even as you break it in.

The car is approaching 2k miles already. the exhaust was installed at 500 miles. The Evo system was purchased used from a forum member listed as only having 6000 miles. I met up with him (he also had a supercharger) and the system was removed from his car and swapped over to mine. One thing to note about the install the mechanic said that he would have to use new clamps due to an issue with the old clamps

he said they would perform the same way. I will post a picture of the said clams and connections. The car also was flashed with the ESS tune(Akra Evo+cold start delete) at 1400 miles (2 hours after its first service

) The 2k and 3k drone have been a constant since the Evo install.

THE TECH · 10-26-2012, 07:54 AM

^That's definitely the Evo. Like others have said, you must be sensitive to sound as the Akra is the least droning, full exhaust system that you can buy.

Team Plutonium · 10-26-2012, 07:57 AM

Get an Eisenmann Race instead.

w00tw00t · 10-26-2012, 08:09 AM

dibs if you ever want to sell your Akra Evo !!

Sean05 · 10-26-2012, 08:10 AM

I am assuming you bought this exhaust used? didnt read your entire post but this bothered me ( THE COUPLING THAT IS HOLDING THE EXHAUST IS NOT THE ONE THAT CAME WITH IT. ) maybe im just being picky... anyways. AKRA has the least drone of all exhaust. and if thats loud for you stock is the only way ...

but anyways good luck. i Had installed my Akra for 2 years now and barely just broke it in... for the last 2 months, it had increased at least 20% in noise... i am currently running a slip on but had a not cat non res pipe before and that was crazy.... just wasnt drivable... well for me anyways. I also had the 200cat and a resonator and that was perfect.. which is the EVO version...

aus · 10-26-2012, 09:14 AM

It's probably the clamps but find another car and go for a ride.

Merlosso · 10-27-2012, 09:22 AM

Stop driving in auto and select a different gear, maybe?

m3an · 10-27-2012, 09:28 AM

Quote:

Originally Posted by aus

It's probably the clamps but find another car and go for a ride.

You're kidding right?

aus · 10-27-2012, 01:40 PM

It's the only non-stock piece he has on the system if it's installed right.
What's your brilliant conclusion?

sleepless · 10-28-2012, 01:49 PM

My guess is that the OP is sensitive to the frequency, like I am. For me, even the stock exhaust drones a bit at those RPMs. I can tolerate very few exhaust systems

truths2k05 · 10-28-2012, 01:56 PM

Make sure the clamps are fully tightened, and not making contact with body or each other.

burakkose · 11-25-2012, 09:24 AM

Evo system drones for sure. You can also be happy with the slip on exhaust !

10-25-2012, 09:43 PM	#1
dadealus Private First Class Drives: 2010 328i, 13'E92 M3 Ordered Join Date: Jan 2012 Location: Richmond Va Posts: 193 iTrader: (0)	Akra Evo Drone? Installed the Akrapovic Evolution exhaust. I heard this system has little to no drone. Yet at 2k and at 3k RPMs I am getting seriously hardcore brain humming drone. any ideas? The video doesn't really capture how much the drone dominates the cabin but you can kind of hear the difference. you can even hear where the drone disappears once the revs drop below 2800ish Last edited by dadealus; 10-25-2012 at 09:57 PM.
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10-25-2012, 10:00 PM	#3
onnex Captain Drives: 2011.5 E92 M3 Join Date: May 2010 Location: SF Posts: 934 iTrader: (10) Garage List 2011 E92 M3 [4.67]	yeaa, if you think the evo has bad drone.. then I dunno what to say. It's for sure one of the more mild systems– maybe just an axel back is the route for you. __________________ 2011 Matte Metallic Blue E92 M3 \| 6MT \| Black Novillo / Black Carbon Leather \| 20" DPE SP-SC 5 \| LS3 V1 LEDs + full blackout \| Full Amuse Ericsson Kit \| Akra Evo \| RD Sport Springs \| Macht Schnell Stage 2 Intake

10-25-2012, 10:41 PM	#5
aus Major General Drives: M3 Join Date: Jul 2005 Location: Seal Beach, CA Posts: 6,171 iTrader: (5)	Either you're way to sensitive or something is wrong with the install. It's not loud at all inside the cabin. It's pretty loud outside when the engine is cold. Try a race exhaust and then you'll see what drone is. __________________ Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."

10-25-2012, 11:07 PM	#7
Rshane M-Flight Member Drives: 2011 E92 M3 Join Date: Jul 2010 Location: Geilenkirchen, Germany Posts: 1,061 iTrader: (0)	Dumb question, but are you sure you got the Akra Evolution system and not the Akra GT4? __________________ 2011 Le Mans Blue M3// Black extended Novillo w/ Blue Grey Aluminum trim/DCT/ZTP/ZCW/ZPP/ZCP Premium Sound ///Akrapovic Evolution Exhaust 2012 Le Mans Blue 135i M Pkg DCT 2008 Brilliant Red Audi TT 3.2 Quattro 6M

10-26-2012, 02:53 AM	#9
slicer Lieutenant Colonel Drives: '13 E92 M3 Join Date: Jan 2009 Location: San Diego, CA Posts: 1,608 iTrader: (3)	I would call myself sensitive to drone and I have not considered Akra Evo to be "droney". It's not stock quiet and I can't hear any drone in your video. As others have said it's subjective and you should try and find another car with the same system to determine if yours is out of the ordinary. Best of luck. __________________ '13 SSII M3 Coupe - KW Clubsport 3-way, Akrapovic Evolution, ESS Tune, HRE R43, StopTech Trophy, IND Euro Front Bumper, TMS Studs/Lugs, BMW Performance Spoiler, BMWPedals Extended DCT Paddles, BMW Edition Grills/Gills

10-25-2012, 10:47 PM	#6
TheDeliverator Private First Class Drives: A Singularity Join Date: Mar 2012 Location: MD Posts: 192 iTrader: (1)	I'd suggest attempting to find another M3 in VA equipped with same setup and a ride in the passenger seat. If you do not hear the same level of drone, you will know the issue is specific to your system\install.

10-26-2012, 02:38 AM	#8
F16RCE Private Drives: e92 M3 DCT Join Date: May 2012 Location: Hertfordshire Posts: 65 iTrader: (0)	My Akra evo ystem definetly doesnt drone at all. Had it for 14 months and my only complaint is lack of volume when not under hard thottle... Get it checked out...

10-26-2012, 04:08 AM	#10
BLACK OPS Captain Drives: E92 M3 6MT Join Date: Sep 2011 Location: Bremerton, WA Posts: 637 iTrader: (0)	Could this be that you're breaking in both the car and exhaust at same time? I would expect the exhaust to get louder even as you break it in. __________________ 2011.75 Jet Black e92 ///M3: ZCP\|6MT\|BB interior\|Turner Motorsport black pedals\|IND Edition Cosmetic Package \|LUX 5K\|35% tint\|clear-bra\|Vorsteiner GTS-V diffuser

10-26-2012, 07:54 AM	#12
THE TECH BimmerPost Supporting Vendor Drives: BPMsport 2012 E92 M3 Join Date: Jun 2011 Location: Kansas Posts: 11,896 iTrader: (39)	^That's definitely the Evo. Like others have said, you must be sensitive to sound as the Akra is the least droning, full exhaust system that you can buy. __________________ Check us out on Facebook at BPMsportLabs

10-26-2012, 07:57 AM	#13
Team Plutonium Major General Drives: 911 Join Date: Dec 2007 Location: Upstate Posts: 8,498 iTrader: (1)	Get an Eisenmann Race instead. __________________ Gone... ESS VT2-625 \| ESS Tune \| M24 Oil Cooler \| Brembo 380mm BBK \| Dinan 4.10 Diff \| KW Variant 3 Coilovers \| Dinan Camber Plates \| Dinan Strut Tower Braces \| Dinan X-Pipe \| Akrapovic Exhaust \| Vorsteiner GTS3 Bumper \| Varis System One Diffuser \| OEM Performance Spoiler \| Stack Gauges \| GTS Door Sills \| Volk TE37 \| Falken Azenis RT615K 275/315 \| Pulled Fenders \| Turner Stud Kit \| OMP ARS Racing Seats New: 991C2S

10-26-2012, 08:09 AM	#14
w00tw00t Major Drives: 2013 E92 M3 AW Join Date: Oct 2010 Location: Seattle Posts: 1,289 iTrader: (9)	dibs if you ever want to sell your Akra Evo !! __________________ M3 E92 AW \| Semi-Stripped Interior \| APEX EC-7 18x10 ET25 \| APEX Wheel Studs \| Akrapovic Evo \| Brembo GT 380 BBK \| Pagid RS29 \| BMC Air Filter \| AiM Solo DL \| OMP WRC Seats w/ Planted Brackets \| Challenge Harness Bar \| Schroth Profi II-6 Hans \| KW Clubsport \| Euro MDM & BPM Tune \| NT01 \| BFG R1 \| NT05 2013 Trackdays # \| 7 \|

10-26-2012, 08:10 AM	#15
Sean05 Putcha ang ganda... Drives: 08 MR E92 M3 Join Date: Feb 2010 Location: Los Angeles, Brea CA. Posts: 4,969 iTrader: (9)	I am assuming you bought this exhaust used? didnt read your entire post but this bothered me ( THE COUPLING THAT IS HOLDING THE EXHAUST IS NOT THE ONE THAT CAME WITH IT. ) maybe im just being picky... anyways. AKRA has the least drone of all exhaust. and if thats loud for you stock is the only way ... but anyways good luck. i Had installed my Akra for 2 years now and barely just broke it in... for the last 2 months, it had increased at least 20% in noise... i am currently running a slip on but had a not cat non res pipe before and that was crazy.... just wasnt drivable... well for me anyways. I also had the 200cat and a resonator and that was perfect.. which is the EVO version... __________________

10-26-2012, 09:14 AM	#16
aus Major General Drives: M3 Join Date: Jul 2005 Location: Seal Beach, CA Posts: 6,171 iTrader: (5)	It's probably the clamps but find another car and go for a ride. __________________ Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."

10-27-2012, 09:22 AM	#17
Merlosso Banned Drives: Results Join Date: Mar 2011 Location: Germantown, MD Posts: 495 iTrader: (2)	Stop driving in auto and select a different gear, maybe?

10-27-2012, 01:40 PM	#19
aus Major General Drives: M3 Join Date: Jul 2005 Location: Seal Beach, CA Posts: 6,171 iTrader: (5)	It's the only non-stock piece he has on the system if it's installed right. What's your brilliant conclusion? __________________ Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."

10-28-2012, 01:49 PM	#20
sleepless Private First Class Drives: 11 E90 M3 Join Date: Jan 2008 Location: Redmond, WA Posts: 116 iTrader: (0)	My guess is that the OP is sensitive to the frequency, like I am. For me, even the stock exhaust drones a bit at those RPMs. I can tolerate very few exhaust systems __________________ '11 E90, Cantrell brake ducts, Apex 18x10 ARC-8, 265/35 PSS, RS19 pads, -2.2 camber, CMS Lap Timer Pro

10-28-2012, 01:56 PM	#21
truths2k05 Private First Class Drives: 11 M3 6 SPD, 12 135i PPK DCT Join Date: Nov 2010 Location: Palm Trees And Sun Posts: 188 iTrader: (0)	Make sure the clamps are fully tightened, and not making contact with body or each other.

11-25-2012, 09:24 AM	#22
burakkose Private First Class Drives: E92 M3 Join Date: Nov 2010 Location: Istanbul Posts: 141 iTrader: (0)	Evo system drones for sure. You can also be happy with the slip on exhaust ! __________________ I ///M Back ! www.twitter.com/verykingman

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