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      09-27-2020, 07:56 PM   #1
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Talking Active Autowerke MAD MAX M3 M4 Exhaust - 3 Can Valved



The Ultimate F8X BMW M3 & M4 Rear Exhaust System - now with valves

At Active Autowerke, it’s not ONLY about making as much power as possible. For over 30 years, power has been the end result of improved performance due to our relentless desire to develop a refined, quality product. This philosophy behind our performance parts is best represented by one of the newest additions to our F80 BMW M3 and F82 BMW M4 collection.

The Active Autowerke F8X rear exhaust was carefully engineered to eliminate the unflattering sound of the factory M3 and M4 exhaust, while also allowing for optimum flow and resonance. Every effort was made in addressing the not so appeasing sound of the stock OEM exhaust, but in designing an exhaust worthy for an "M" car. We believe our rear exhaust combined with our mid-pipe offers the deepest sound and best performance of any other system on the market today. Available for both models, this axle-back exhaust gives your BMW the deep, throaty, growl a car of its caliber should have had from the factory! And NOW, after many requests from our dedicated customers, we are introducing a valved version of the ultimate exhaust which has been dubbed "Max Max" by our team. We will update dyno charts later but this exhaust flows even better with its valved system.



Key features

Made in the USA
18+ WHP gain over stock*
30+ LB-FT gain over stock*
Quicker turbo spool
Low, Deep Rumble
Flex joints to reduce vibration
Double-canned muffler to reduce resonance
Each exhaust test-fit on our F8X Exhaust Fixture
Guaranteed to fit all F80 BMW M3/F82 BMW M4
Includes all necessary installation hardware

Note: Active Autowerke Full Exhaust System is recommended for, BUT NOT LIMITED TO, off-road or racing applications.
Refinement Meets Performance:

The OEM F8X exhaust utilizes the services of middle and rear silencer as well a pair of exhaust valves. It is supposed to be a freely-flowing exhaust that produces an external sound that meets the demands of a M3 or M4.

The middle silencer has a small crossover that allows for noise dampening while the rear silencer (muffler) has a reflection chamber on either end that re-directs exhaust gases to the opposite side they entered from (driver’s side exhaust exits on passenger side). When the exhaust valves are closed, this helps eliminate the back pressure buildup that occurs during noise dampening.

After analyzing the factory exhaust, we realized less would be more in regards to our F8X exhaust.

We began with a complete redesign of the mid-pipes. This involved drastically increasing exhaust flow as well as reducing the uneven, out-of-sync turbocharger's sound that many F8X owners have complained about on the forums. We were able to achieve this on our F8X Mid-Pipe (sold separately) by using a single pipe that not only cancels out the offensive sound, but allows unrestricted exhaust flow.

The most noticeable difference between the Active Autowerke F8X Rear Exhaust Section and the BMW factory exhaust is how we utilized the muffler. Our design incorporates two mufflers that create a huge resonance chamber to further cancel out the “weed eater” noise.

This design also allows exhaust gases to crossover freely without being forced in a certain direction - eliminating back pressure without sacrificing that deep, aggressive rumble that some turbocharged cars are known for.

Note: Active Autowerke GUARANTEES that each and every F8X Rear Exhaust Section will be a precise fit. Every Active Autowerke F8X Rear Exhaust Section is test-fitted on our in-house F8X Exhaust Fixture as part of our quality control measures.


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      09-27-2020, 09:11 PM   #2
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Hey Mike, I’m confused. Does this unit have the equal length mid pipe?
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      09-28-2020, 05:13 AM   #3
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Quote:
Originally Posted by jpy1980 View Post
Hey Mike, I’m confused. Does this unit have the equal length mid pipe?
In that picture above it does...... but you will have to check to see how it sale configuration will be. Very bust set up, like the straight pipe option but lots of forks in the road
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      09-28-2020, 08:24 AM   #4
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Just spoke to AA. Mad Max is only the valved 3 can rear section. Midpipe is not included. You pick if you want to reuse your factory midpipe or buy an AA mid (single or equal).

Currently 6-week wait on all EL mids (res/non-res) , and Single mids are in stock.

I want to hear Max on an EL mid with Hi-Flow Cats. Prolly extra mean sounding when opened up!
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      09-28-2020, 11:00 AM   #5
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Hmm... it looks like repurposed NOS of their previous model, [Edit:] "3 can" exhaust.

Nevertheless, If it lives up to the hype (Dyno. & sound), it's an excellent idea!

The claimed "+18WHp" is based upon a purely "stock" (Non - ZCP or DP'd. stock Mid.)
configuration, correct?

What's the weight in comparison to the OEM Axle back/muffler set up?

Also, can that back plate, to the rear (facing out) of the valved downturned pipes, be
(waterjet?) [Edit: Similar to the exhaust cross brace] etched with a logo?

Personally, I'd like to see and hear it on a stock "ZCP" with an EL resonated Mid Pipe.


Cheers!

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Last edited by Trevorstein; 09-30-2020 at 12:47 PM..
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      09-28-2020, 11:05 AM   #6
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Well this looks interesting, and the fact you can pair it with an AA mid is a huge plus. Awaiting some sound clips, especially with stock DPs and original AA midpipe. Sorry if I missed it, but what's the price range for this rear section?
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      09-28-2020, 11:24 AM   #7
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Looks Wicked!



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      09-28-2020, 11:28 AM   #8
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Quote:
Originally Posted by jpy1980 View Post
Hey Mike, I’m confused. Does this unit have the equal length mid pipe?
its an axle back that can be used stock, single or EL midpipes

Quote:
Originally Posted by 9M71 View Post
Well this looks interesting, and the fact you can pair it with an AA mid is a huge plus. Awaiting some sound clips, especially with stock DPs and original AA midpipe. Sorry if I missed it, but what's the price range for this rear section?
Check your inbox

Quote:
Originally Posted by Trevorstein View Post
Looks Wicked!

Agree!


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      09-28-2020, 11:31 AM   #9
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Really looking forward to Non Res EL MP with Stock DP soundclips! Getting reaaally close to pulling the trigger on this setup.
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      09-28-2020, 12:19 PM   #10
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Mike can you send me a pm with pricing for this exhaust plus the EL mid pipe shipped to 90025? Thanks!
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      09-28-2020, 05:56 PM   #11
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Quote:
Originally Posted by jpy1980 View Post
Mike can you send me a pm with pricing for this exhaust plus the EL mid pipe shipped to 90025? Thanks!
Done
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      09-28-2020, 07:05 PM   #12
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Quote:
Originally Posted by Trevorstein View Post

The claimed "+18WHp" is based upon a purely "stock" (Non - ZCP or DP'd. stock Mid.)
configuration, correct?

What's the weight in comparison to the OEM Axle back/muffler set up?

Also, can that back plate, to the rear (facing out) of the valved downturned pipes, be
(waterjet?) etched
[Edit: Similar to the exhaust cross brace] with a logo?

Personally, I'd like to see and hear it on a stock "ZCP" with an EL resonated Mid Pipe.
Hey Mike!

Since your the OP here, could you please respond to the above post.


Thanks!

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Last edited by Trevorstein; 09-28-2020 at 07:10 PM..
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      09-28-2020, 07:09 PM   #13
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Quote:
Originally Posted by mike@x-ph.com View Post
Quote:
Originally Posted by jpy1980 View Post
Mike can you send me a pm with pricing for this exhaust plus the EL mid pipe shipped to 90025? Thanks!
Done
Can you do the same for me sir?! To 60126.
Non res EL Pipe for me please.
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      09-28-2020, 08:27 PM   #14
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Quote:
Originally Posted by Mintsopoulos View Post
Can you do the same for me sir?! To 60126.
Non res EL Pipe for me please.
Done
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      09-29-2020, 11:37 AM   #15
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Looks badass!
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      09-29-2020, 12:37 PM   #16
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So excited for soundclips.
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      09-29-2020, 01:24 PM   #17
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+1 for sound clips - any idea when these will be posted? Thanks!
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      09-30-2020, 09:06 AM   #18
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I believe Active Autowerke posted a video of this setup a couple of weeks ago on their social media
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      10-10-2020, 08:12 AM   #19
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Any updated sound clips? I couldn't find any for mad max anywhere
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      10-10-2020, 06:49 PM   #20
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I can’t find them either - interested to hear and possibly purchase!
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      10-11-2020, 10:49 AM   #21
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Quote:
Originally Posted by rkyan661 View Post
Any updated sound clips? I couldn't find any for mad max anywhere
Quote:
Originally Posted by LRGM3 View Post
I can’t find them either - interested to hear and possibly purchase!
Ill check with Active
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      10-11-2020, 01:26 PM   #22
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what's the weight?
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