Akrapovic Evolution Exhaust for F80 M3 / F82 M4 - Weights, Dyno, Impressions, Video

[Tonymiabmw]

After hearing that Eisenmann I dont think there are any other options

[dmk08]

Originally Posted by Tonymiabmw

After hearing that Eisenmann I dont think there are any other options

MPE. I know there are some vendors working on 'connecting pipe' solution for the MPE so you don't have to cut your stock. I suggested it to a vendor and they said it was already in the works.

[111R]

The workmanship on this system looks great, but I don't care for the carbon fiber tips or diffuser. The Akrapovic lettering all over them looks like something the NOPI crowd would get excited about on a Civic. If that's what you like, go for it.

[Vintage]

Not meant to be negative, and very sexy set up BUT . . . . minimal weight savings and minimal power gain for maximum price. I respectfully suggest you are much better off just buying a good set of DPs (race cats and ceramic coating at $1,500 or so) if performance is what you are after.

[SOM3]

Originally Posted by Tonymiabmw

After hearing that Eisenmann I dont think there are any other options

For the first time you said something that makes ABSOLUTE sense.

[RingMeister01]

Heavy rasp in the rev range at 0:06 and 0:28

[RingMeister01]

Originally Posted by Tonymiabmw

After hearing that Eisenmann I dont think there are any other options

AMEN

[m3less]

I can't understand Why anyone would pay the price for this exhaust. You will never see how could it looks once on the car and 7hp is weak..

[jskrilla]

Great pics!

[M4isKing]

@tom @ eas

I feel like its both: downpipes are the restriction and the oem exhaust does a good job. It actually looks like an exhaust system, vs a can of a muffler!

[jackkk]

Tnx guys for a good review. I'm really interesting in how the DP's will sound and how much they will give with the stock ECU.

[tom @ eas]

Originally Posted by M4isKing

@tom @ eas

I feel like its both: downpipes are the restriction and the oem exhaust does a good job. It actually looks like an exhaust system, vs a can of a muffler!

That's what we'll be confirming when we have the other EVO system installed on our M4 in the next day or so. We'll be sharing data when completed.

[M4isKing]

Originally Posted by tom @ eas

That's what we'll be confirming when we have the other EVO system installed on our M4 in the next day or so. We'll be sharing data when completed.

[rjd598]

i find it funny how 90% of the comments are all positive towards this system. yes it looks great, yes it is lighter, it sounds better than stock, but it offers nothing more and with a price tag like that who are you joking. the akra evo for the e9x was at least "justifiable".

[karbonphiber]

sick exhaust system!

[SocalBM]

Looks wonderful and no one can fault the quality of work. However, that "7 whp gain" is negligible and you'll never notice it, ever. Paying the several thousands for this system gets you nothing tangible; just bragging rights.

[TheRealOrosie]

Originally Posted by Tonymiabmw

After hearing that Eisenmann I dont think there are any other options

[tom @ eas]

Originally Posted by M3ichael

Great write up and pics.

Originally Posted by Diver

Great photos.

Originally Posted by jskrilla

Great pics!

Appreciate the feedback guys. Surprisingly, there's been little info on these systems and we wanted to get most questions answered in one post. If there are others, we can add it to the front page.

Originally Posted by Vintage

Not meant to be negative, and very sexy set up BUT . . . . minimal weight savings and minimal power gain for maximum price. I respectfully suggest you are much better off just buying a good set of DPs (race cats and ceramic coating at $1,500 or so) if performance is what you are after.

Originally Posted by m3less

I can't understand Why anyone would pay the price for this exhaust. You will never see how could it looks once on the car and 7hp is weak..

The Akrapovic systems are not for everyone, but it's good to have choices. Different stokes for different folks, that's what keeps the builds interesting.

Originally Posted by signes

Isn't this to be expected? Any plans for Akra to address the downpipes? I am a huge Akra fan and love the looks of this thing, work of art. One of the justifications for paying so much for the E9x Evo was the gains (in addition to the weight savings.) With the gains so small here and the good M performance exhaust sound, I don't see why somebody would go this direction.

Akrapovic has downpipes being released within the next 30 days.



Install is scheduled within the next couple of weeks when the Akrapovic M3 makes a return visit, we'll be gathering another before/after dyno run to compare results with ours.

Originally Posted by jackkk

Tnx guys for a good review. I'm really interesting in how the DP's will sound and how much they will give with the stock ECU.

Appreciated. We'll also be playing with the JB4 to see what gains are present, as well as bringing it to the upcoming airstrip events.

Originally Posted by M4isKing

@tom @ eas

I feel like its both: downpipes are the restriction and the oem exhaust does a good job. It actually looks like an exhaust system, vs a can of a muffler!

Typically M cars runs very well out of the box, but the turbos are a whole different ballgame. A proper tune should complete the package well.

Originally Posted by uhn2000

Its nice but the sound in the video is lacking no?

The combination of a single mic, inside a shop and compressed video clip is always a recipe for disaster for audio. We'll be getting some proper sound clips, I happen to know someone with professional audio equipment that has provided scores for some of the large movie studios.

Here's a good example used on a supercharged E92M3. Audio switches over at about 0:12 in the video:

And some images of the setup. Microphones used are Earthworks QTC40.





We'll setup a session with the Akrapovic EVO system on the M4 and get a clip posted as soon as we're completed.

Originally Posted by RingMeister01

To think Akrapovic started as a small manufacturer of sportbike exhausts (then called Scorpion) and where there are now in a short time is impressive.

Originally Posted by 111R

The workmanship on this system looks great, but I don't care for the carbon fiber tips or diffuser. The Akrapovic lettering all over them looks like something the NOPI crowd would get excited about on a Civic. If that's what you like, go for it.

The Akrapovic badge is only seen on the top of the diffuser. Here's some studio shots we just finished shooting:







Let me know if there are any more questions or feedback.

[4PIPE]

so confused. does the MPE go as far down as these pipes? or is it shorter? and would it be possible to install the MPE with akra dp's

[grantmax]

Originally Posted by tom @ eas

Dyno Results

Being a prime opportunity for dyno data, we were able to get a baseline and after result with the system installed. With a peak gain of 7whp on 91 octane, this can mean a couple of things: 1) The BMW factory exhaust is very efficient, or 2) The choke point (likely) is further up at the downpipes.


Hope you enjoyed the experience as much as we did. We'll be installing system #2 shortly on our Austin Yellow M4 w/ Downpipes and following up with comparative results.

Tom - What tint (brand and %) does the Akra car have in these pictures?

[irablumberg]

Is anyone making DPs with race cats? I really don't want to throw codes or to work around them. Also, I still want to keep the tail pipe emissions within the legal limits.

[Hobbination]

$7000.00 for 7HP, seems legit....another way to go is wait a few months and when the air is fallish, youll feel an extra 7HP from God, OR option 3, drill some holes in the muffler and get more noise for free