BMW M3 Forum (E90 E92)

BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   M3Post - BMW M3 Forum > E90/E92 M3 Technical Topics > Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications
 
Steve Thomas BMW
Post Reply
 
Thread Tools Search this Thread
      03-07-2011, 08:14 PM   #1
gthal
Brigadier General
gthal's Avatar
Canada
83
Rep
3,508
Posts

 
Drives: 2015 M4
Join Date: Jul 2007
Location: Canada

iTrader: (2)

Garage List
2011 M3  [3.37]
Review: Akrapovic slip-on exhaust

Although there are a TON of reviews for the various exhausts on the forum, I thought I would post my thoughts on my new Akrapovic slip-on for those in the market.

Background

I have owned 4 after market exhausts over the past 3 years. 3 were for my previous car (an Infiniti G37S coupe) and 1 for the M3 (the Akra). Each time I bought an exhaust, my main motivation was to get a slightly deeper, throatier sound but only a slight increase in volume. Also... NO DRONE

Let me say that of the 3 for the Infiniti all 3 were sold. Too much drone, too loud or bad tone.

I have found that many people will say there is no drone when, in fact, there is... well, at least to me. People have a wide range of sensitivity to drone in exhausts and I am on the more sensitive side.

I spent a LOT of time deciding between the Eisenmann Sport and the Akra. In the end, based on MANY discussions with owners and IND, I decided that the Eisenmann would be a little louder in-cabin than the Akra and that worried me. I do believe the Eisenmann has a slightly better tone but, to me, I wanted something that was less intrusive in-cabin. Havign said that, the Akra has a GREAT tone too!!

The IND experience

Lately a lot of threads have been popping up exclaiming the virtues of IND. Well, all I can say is that IND (I dealt with Nate) is by far the very best vendor I have EVER dealt with for any car I have owned. I also recently bought a set of gloss black front grilles and side gills from them... same great service as I experienced with the Akra. These guys don't seem to care whether you are spending $200 or $2,000... they give you the same attention. They are fast, professional, responsive, knowledgable, patient... just awesome. I really can't say enough to recommend them. For me, the service they offer is so good that I would likely pay a premium to deal with them (Nate, pretend I didn't actually say that ).

First impressions

Enough has been said about this that I won't spend much time on it... packaging, quality, welds... perfect. What you would expect when you spend $3K on an exhaust.

What struct both me and the guys installing it was how MUCH lighter the exhaust was than OEM. I mean WAY lighter. The OEM exhaust took two guys to safely remove and lower from the car. The Akra could have been lifted by my 3 year old. Quite remarkable actually.

Looks are amazing... tips and fitment are perfect... makes the car MUCH nicer outside. Because the tips are adjustable and have a large range of travel, you can have them completely tucked or pushed way out. I really like this flexibility and went pushed out about the same as OEM.

Sound

Here is my honest impression of the sound...
  • Deep and bassy... MUCH more so than OEM.
  • A little louder than OEM (+10% to 15%) BUT... because it has much, much more bass, it seems quite a bit louder than OEM from 1,000 to 4,000 RPM. After that, about the same as OEM but a little deeper sounding.
  • Sounds like a V8 should sound to me. Much more "appropriate" than OEM.
  • Drone? No more than OEM which I found droned a little. The Akra is no more than that and I am VERY happy about it. This is the very first after market exhaust that I have found that does not drone.
  • Very comfortable on the highway with great sound.
  • From 1,000 to 4,000 RPM, I can actually feel the exhaust in the cabin. You can ever so slightly feel the bass... this is not a negative comment really but something I didn't expect.
  • Very, very bassy and loud on cold start up. If you start the car in your garage it will vibrate stuff
For those who say the Akra slip-on is only slightly louder than OEM... in my opinion you are smoking some really nice stuff Well, as I said, it isn't really much louder but seems louder due to the bassy sound. However, for someone like me that is sensitive to an exhaust that drones or is too loud, this exhaust is still good for DD but with a much nicer, fuller, deeper, bassy tone. It sounds amazing outside of the car and has a deep, bassy sound inside from 1,000 to 4,000 RPM and then a slightly more bassy sound over that compared to OEM. I have heard the full EVO system and the slip-on, IMO, is only a little quieter.

Given that this is considered one of the quietest exhausts for the M3, I simply cannot understand how you guys with "loud" exhausts can handle driving your cars!! In my parking garage at the office, the Akra reverberates like crazy but is still OK. I can only imagine how insane a Gintani or the like must be. I don't think I could handle it... but that's the great thing about all of this... we can each buy something we like and what suits our own tastes.

The system was installed by fellow M3Forum member Mark (M3Nova) at his new, high end auto dealership. Best part of this was being able to spend the install time with a group of guys who loved cars too and me getting to be part of the install. After, he took the car for a drive so I could hear it from the outside (how nice of him ).

So, I'm happy with the added sound and changed tone. My wife was NOT happy that I was buying an exhaust. I had it installed today "in stealth mode" . I plan to see if she notices... if she does and hates it, well, it may go up for sale I suspect she won't notice or, if she does, won't find it too bad I hate to let her have that kind of influence but, for those of us with spouses, an unhappy wife is never a good thing

Summary

Build quality: A+
Looks: A+
Tone and sound quality: A+
Drone: A+
Perceived loudness (i.e. is it too loud): B+
Cold startup (i.e. is it too loud): C
DD liveability: B+ (verging on an A-)
IND: A+++
WAF: T.B.D.

Some pics... ignore the dirty car... it was raining today.



__________________
2015 M4 | Austin Yellow | Black Full Merino Leather | DCT
2014 Corvette Stingray | Z51 | Torch Red | 7MT - Sold
2012 MB C63 Coupe | Performance package | Obsidian Black - Sold
2011 E92 M3 | Jerez Black | Fox Red | DCT | Competition Package - Sold

Last edited by gthal; 03-07-2011 at 09:06 PM.
Appreciate 0
      03-07-2011, 08:21 PM   #2
J08M3
Major General
J08M3's Avatar
United_States
102
Rep
6,012
Posts

 
Drives: 2011 M3 COUPE
Join Date: May 2008
Location: NEW YORK

iTrader: (8)

Nice review. I agree with you that Akra is quite a bit louder than OEM. It does sound nice.
__________________
Appreciate 0
      03-07-2011, 08:39 PM   #3
scottEdog1
Private First Class
4
Rep
128
Posts

 
Drives: e90 m3
Join Date: Jan 2011
Location: california

iTrader: (3)

Wow - what a review
I really appreciate this kind of review. To me droning is also that super loud bass that comes into the car as well.

Hereis a question: when it comes into the car can you still hear light music or light talking going on by friends or kids in the back?

I will be honest my wife hated that I went through 9 exhausts on my e46 m3 previous to this model. I really do not want nor can afford to play like that again. esp with kids now. This type of review and like others has been helpful.

Many thanks for your time on your post.
also let me know....
__________________
Jerez e90m3 with some mods
Appreciate 0
      03-07-2011, 08:41 PM   #4
J08M3
Major General
J08M3's Avatar
United_States
102
Rep
6,012
Posts

 
Drives: 2011 M3 COUPE
Join Date: May 2008
Location: NEW YORK

iTrader: (8)

^--- You will be fine with Akra, kids and wife wont' mind the sound
__________________
Appreciate 0
      03-07-2011, 08:47 PM   #5
gthal
Brigadier General
gthal's Avatar
Canada
83
Rep
3,508
Posts

 
Drives: 2015 M4
Join Date: Jul 2007
Location: Canada

iTrader: (2)

Garage List
2011 M3  [3.37]
Quote:
Originally Posted by scottEdog1 View Post
Wow - what a review
I really appreciate this kind of review. To me droning is also that super loud bass that comes into the car as well.

Hereis a question: when it comes into the car can you still hear light music or light talking going on by friends or kids in the back?

I will be honest my wife hated that I went through 9 exhausts on my e46 m3 previous to this model. I really do not want nor can afford to play like that again. esp with kids now. This type of review and like others has been helpful.

Many thanks for your time on your post.
also let me know....
The Akra is definitely bassy. I know what you mean equating bass with drone. For me, if the bass is clean and sounds like it should be there, it isn't drone but rather just a clean bassy exhaust. That is the Akra.

Having said that, the bass is much more pronounced in the car. It is also, however, not so loud that you would have any trouble with a conversation or listening to the radio... not at all. But, it makes the OEM exhaust sound truly sissy

I am really sensitive to too much sound and the Akra is the first after market exhaust I think I can live with day-to-day. I'm not sure what my wife will think yet but I really do think she will be OK with it.

A lot of guys were suggesting the Eisenmann Sport to me based on sound quality. However, most also said that they thought it was a fuller, more bass rich sound. This set off warning bells for me personally as too bassy is a problem. Nate at IND was suggesting the Eisenmann to me but after I really explained what I wanted, he checked with the guys there and they all agreed the Akra would have less cabin volume due to slightly less bass. I can say that any more bass than the Akra would be too much for me and I would end up selling it.

The only thing I don't love about it is how LOUD it is on cold startup. When I'm in my garage, you can hear the vibration in the kitchen. I tried this when my wife wasn't home... it will be interesting to see what she says tomorrow morning when she hears me leave for work
__________________
2015 M4 | Austin Yellow | Black Full Merino Leather | DCT
2014 Corvette Stingray | Z51 | Torch Red | 7MT - Sold
2012 MB C63 Coupe | Performance package | Obsidian Black - Sold
2011 E92 M3 | Jerez Black | Fox Red | DCT | Competition Package - Sold

Last edited by gthal; 03-07-2011 at 09:15 PM.
Appreciate 0
      03-07-2011, 08:51 PM   #6
DaveHutchinson
Private
2
Rep
67
Posts

 
Drives: GT-R
Join Date: Jan 2011
Location: FL

iTrader: (2)

I'm about to pull the trigger on this very same exhaust so thanks for the very informative review!

If for some reason the WAF fails then please do PM me however I'm sure it'll all be fine.
__________________
2009 GT-R Premium, Red
Gone - 2011 BMW M3, DCT, Jet Black, Black Carbon Leather, Technology Package, Premium Package, 19" Double Spokes, Ipod, Akrapovic slip on
Gone - 2006 Carrera 2S, Porsche Aerokit, Arctic Silver, HRE P40's, AWE Mufflers & Tips, Dension + BT, DCT-MS Carbon wheel
Appreciate 0
      03-07-2011, 09:00 PM   #7
Chowster
E60_to_E90
Chowster's Avatar
Canada
16
Rep
1,204
Posts

 
Drives: 2011 E90 M3
Join Date: Aug 2010
Location: Surrey, BC, Canada

iTrader: (2)

Nice review. Send it over to the left coast if your wife doesn't approve! I'm sure you won't have a problem unloading this beauty. Thanks for the great commentary.
__________________
2011.5 E90 Dinan M3, SS II, M-DCT, EDC, M Drive. Winter setup 220M w/ 255/275 Blizzaks
Performance Mods: Dinan St.1 suspension, exhaust, intake; TTPs; BPM St.II, DCT, servo tunes
Cosmetic Mods: OEM CF splitters, mirrors, center console, spoiler; Arkym CF diffuser; LUX; tint
Appreciate 0
      03-07-2011, 09:01 PM   #8
gthal
Brigadier General
gthal's Avatar
Canada
83
Rep
3,508
Posts

 
Drives: 2015 M4
Join Date: Jul 2007
Location: Canada

iTrader: (2)

Garage List
2011 M3  [3.37]
Quote:
Originally Posted by Chowster View Post
Nice review. Send it over to the left coast if your wife doesn't approve! I'm sure you won't have a problem unloading this beauty. Thanks for the great commentary.


I'm pretty sure she will be fine with it... well, I'm really hoping she will be fine with it because I it.
__________________
2015 M4 | Austin Yellow | Black Full Merino Leather | DCT
2014 Corvette Stingray | Z51 | Torch Red | 7MT - Sold
2012 MB C63 Coupe | Performance package | Obsidian Black - Sold
2011 E92 M3 | Jerez Black | Fox Red | DCT | Competition Package - Sold
Appreciate 0
      03-07-2011, 09:36 PM   #9
Hollywood Hogan
Captain
Hollywood Hogan's Avatar
15
Rep
626
Posts

 
Drives: E93 M3 VF620, Nissan Leaf :]
Join Date: Jul 2009
Location: Bay Area

iTrader: (6)

thanks for the review...I'm install the RPi GTM axle back tomorrow and hope it isnt TOO loud
Appreciate 0
      03-07-2011, 10:04 PM   #10
GOLFFRR
BimmerPost Supporting Vendor
GOLFFRR's Avatar
276
Rep
17,377
Posts


 
Drives: Golf Cart
Join Date: Mar 2009
Location: Solvang, CA/Camarillo, CA

iTrader: (4)

thanks for the write up i am also considering this but the full system the only reason i have not pull the trigger is im scarred it will be to loud for my community in the mornings when i goto work at 6am
__________________

BEFORE YOU BUY YOUR NEXT BMW, EMAIL US FIRST WE CAN HOOK YOU UP!
Need a quote or assistance from David? GO HERE-->bmwdavid@icloud.com or 202-262-2900
David's ED special ALL M cars-->http://f10.m5post.com/forums/showthread.php?t=1042739
Appreciate 0
      03-07-2011, 10:05 PM   #11
Sean@PYSpeed.com
Sean@PYSpeed.com's Avatar
United_States
145
Rep
8,956
Posts

 
Drives: 2009 AW E92 M3
Join Date: Nov 2009
Location: Bay Area

iTrader: (22)

Send a message via AIM to Sean@PYSpeed.com
Nice review... definitely one of the more thorough reviews in the forum. The only other thing you may need is more pictures + video... Haha

BTW, may I ask, does ur house have proper insulation? It shouldn't be vibrating ur whole house
Appreciate 0
      03-07-2011, 10:16 PM   #12
gthal
Brigadier General
gthal's Avatar
Canada
83
Rep
3,508
Posts

 
Drives: 2015 M4
Join Date: Jul 2007
Location: Canada

iTrader: (2)

Garage List
2011 M3  [3.37]
Quote:
Originally Posted by Sean@PYSpeed.com View Post
BTW, may I ask, does ur house have proper insulation? It shouldn't be vibrating ur whole house
Well, vibrating may be a little exagerated ... but you can hear the exhaust in the kitchen.
__________________
2015 M4 | Austin Yellow | Black Full Merino Leather | DCT
2014 Corvette Stingray | Z51 | Torch Red | 7MT - Sold
2012 MB C63 Coupe | Performance package | Obsidian Black - Sold
2011 E92 M3 | Jerez Black | Fox Red | DCT | Competition Package - Sold
Appreciate 0
      03-07-2011, 10:33 PM   #13
scottEdog1
Private First Class
4
Rep
128
Posts

 
Drives: e90 m3
Join Date: Jan 2011
Location: california

iTrader: (3)

Quote:
Originally Posted by gthal View Post
Well, vibrating may be a little exagerated ... but you can hear the exhaust in the kitchen.
Thanks again for getting back to me on this. I appreciate your time and insight so that I my be able to make a healthy decision.
__________________
Jerez e90m3 with some mods
Appreciate 0
      03-07-2011, 11:10 PM   #14
BMRLVR
Grease Monkey
BMRLVR's Avatar
Canada
39
Rep
2,334
Posts

 
Drives: 2011 E90 M3,1994 Euro E36 M3/4
Join Date: Apr 2006
Location: Fort McMurray, Alberta, Canada

iTrader: (3)

Congratulations on a the Akra Heath!!! I am glad you are pleased with it. If you feel you need a little more sound in the future the Akra Mid-pipe/HFC's make a nice little increase in sound without adding hardly any drone.

P.S. What is the name of Mark's new dealership? Is he going to be renting high-end cars like he mentioned he was interested in doing in a previous post? if he is I may be interested in getting one when I come to Halifax in August.
__________________
2011 E90 M3 ZCP - Individual Moonstone/Individual Amarone Extended/Individual Piano Black With Inlay:LINK!!!
1994 Euro E36 M3 Sedan - Daytona Violet/Mulberry:LINK!!!
Appreciate 0
      03-07-2011, 11:29 PM   #15
Gearhead999s
Major General
Gearhead999s's Avatar
93
Rep
6,814
Posts

 
Drives: F25 2.8d(wifes)F82 M4
Join Date: Apr 2007
Location: Toronto

iTrader: (0)

Quote:
Originally Posted by gthal View Post
Well, vibrating may be a little exagerated ... but you can hear the exhaust in the kitchen.
Hmmm.My wife gets upset also when she hears me exhaust in the kitchen
Appreciate 0
      03-08-2011, 12:51 AM   #16
Draff1
Private First Class
Draff1's Avatar
United_States
2
Rep
195
Posts

 
Drives: 2009 Silverstone M3 Coupe
Join Date: Aug 2009
Location: San Diego, CA

iTrader: (0)

Great review!
__________________
2009 Silverstone II E92 M3 Coupe - DCT
Dinan Exhaust, RPi scoops, Dinan Tune, Dinan Pulley, BMC filter, LCI Taillights, MS 15mm spacers, Huper Optik tint.
Appreciate 0
      03-08-2011, 12:57 AM   #17
ES_TRADER
Colonel
68
Rep
2,701
Posts

 
Drives: 328i, 335i, M3, 535i, X5, 36M
Join Date: Oct 2010
Location: OC

iTrader: (3)

Garage List
2014 Ford Raptor  [0.00]
2012 328i E92  [5.00]
2013 X5  [0.00]
2013 335i F30  [4.00]
1990 Toyota Previa  [0.00]
1997 E36 M3  [5.00]
2011 E92 M3  [0.00]
2011 535i  [0.00]
Quote:
Originally Posted by gthal View Post

The only thing I don't love about it is how LOUD it is on cold startup. When I'm in my garage, you can hear the vibration in the kitchen. I tried this when my wife wasn't home... it will be interesting to see what she says tomorrow morning when she hears me leave for work
This feature is what I love most about this slip. I sonetimes wish it was like this 100% of the time. But ur review is definitely spot on. Above 4k rpm u can't hear it anymore and the engine growl takes over. To me, standing outside while someone drove the car, it actually sounded quite exotic and slightly high pitched closer to 3.5k rpm. With windows up and music on, u can barely hear it almost have to listen for it. With windows down and music up about 50% loud, u would also have to listen for it too. It does sound sweet and classy tho. Especially the downshift rev matching.
Appreciate 0
      03-08-2011, 01:05 AM   #18
01'325rip
Captain
11
Rep
685
Posts

 
Drives: 08' E93 M3
Join Date: Sep 2010
Location: miami

iTrader: (0)

god this makes me want Akra. Seems like its the only route to go.

In addition it seems like this is also the best looking exhaust those tips look great.!
Appreciate 0
      03-08-2011, 01:30 AM   #19
Cal@Sonic MS
Cal@Sonic MS's Avatar
United_States
194
Rep
4,653
Posts

 
Drives: bmw
Join Date: Jan 2011
Location: earth

iTrader: (2)

Nice review. Can't go wrong with Akrapovic
Appreciate 0
      03-08-2011, 02:25 AM   #20
Rshane
M-Flight Member
Rshane's Avatar
United_States
13
Rep
1,087
Posts

 
Drives: 2011 E92 M3
Join Date: Jul 2010
Location: San Antonio, Texas

iTrader: (0)

Great revıew..thanks for takıng the tıme. The more I hear about the Akrapovıc exhaust, the happıer I get that I wıll be placıng my order for the full system when I get back from my current deployment.

Quote:
Originally Posted by Gearhead999s View Post
Hmmm.My wife gets upset also when she hears me exhaust in the kitchen
Gas-X should help wıth that
__________________
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
2013 Ford F150 FX4 Supercrew
Appreciate 0
      03-08-2011, 02:36 AM   #21
Maseroche
Major
Maseroche's Avatar
Bahrain
15
Rep
1,402
Posts

 
Drives: '08 BMW M3
Join Date: Sep 2009
Location: Bahrain

iTrader: (0)

Garage List
2008 BMW M3  [0.00]
Excellent review!
__________________
Khalid
'08 BMW M3


Appreciate 0
      03-08-2011, 02:58 AM   #22
jonasaurus
Brigadier General
jonasaurus's Avatar
United Kingdom
34
Rep
3,147
Posts

 
Drives: E90 M3 [Sold]
Join Date: Oct 2010
Location: NYC

iTrader: (0)

Thanks for the great insightful review, made alot of relative statements that makes it much easier to "relate" to. Think this is a big point of discussion, Eisenmann sport or Akra slip for many E9X owners.
__________________
///M3 | E90 LCI | Space Grey | Fox Red with CF Structure | 6MT | 260M | My build
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 04:13 PM.




m3post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST