[mike@x-ph.com]

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Order Link
https://x-ph.com/active-autowerke-bmw-m3-m4-midpipes/

Active Autowerke has been an industry leader in engineering high quality BMW performance products for over 30 years. Dedicated to improving performance with the highest quality products, Active Autowerke is synonymous with making power. Our philosophy on developing refined BMW performance parts, with power in mind, and providing them to a large BMW community can be best characterized by our F87 mid pipe – a valuable addition to our M2C BMW collection.

The Active Autowerke F87 Mid Pipe was specifically designed to eliminate the highly restrictive nature of the S55 – thus creating optimal exhaust flow and drastically improving performance. In addressing the annoying sound ( described by many like that of a weed-eater ) we needed to better understand the issue. After much research and testing we discovered the synchronization of the Turbos as the main factor in the sound. The solution was a single mid pipe which eliminated much of the annoying sound. The next challenge was making a large 3.5" pipe ( needed for optimum performance ) fit without ground clearance issues - thus the oval pipe. Engineered for an exact fit on the new BMW M2 Competition, the difference in power with this mid pipe will be noticeable the moment it is installed!

KEY FEATURES

• 18+ WHP over stock*
• 30+ LB-FT over stock*
• Improved performance from less back pressure
• Deeper & throatier exhaust note
• Less restrictive, more free flowing
• Lighter weight than factory system
• Quicker turbo spool
• Increased low end and mid-range power
• Single-pipe design eliminates cheap “weed-eater” sound from factory exhaust

[Commanderwiggin]

"eliminates cheap “weed-eater” sound from factory exhaust"

Now to disable the burbles and it'll be perfect! I know the first thing I'm ordering for my M2 Comp...tune and then this!

[FSU_Logan]

Once I am back in the states David and crew will get my money for full exhaust!

[twboy1999]

So the dyno is with full exhaust’]

What does it consist of ?

[FSU_Logan]

Originally Posted by twboy1999

So the dyno is with full exhaust’]

What does it consist of ?

Full exhaust minus downpipes

Stock dyno was done on a different day but the DA was actually worse that day. If everything else is truly equal and the dyno was not adjusted in those few weeks, it's an incredible amount of gains from a catback. Little too much lol

[M-Pilot]

Originally Posted by FSU_Logan

Full exhaust minus downpipes

Stock dyno was done on a different day but the DA was actually worse that day. If everything else is truly equal and the dyno was not adjusted in those few weeks, it's an incredible amount of gains from a catback. Little too much lol

This dyno is from years ago and not on an M2C ( it was done on an M3 or M4).

[808elise]

So what is the lowest price?

[mike@x-ph.com]

I posted this thread in the wrong section, i meant to post it in the vendor section.

Mods please delete

[FSU_Logan]

Originally Posted by cntzl

This dyno is from years ago and not on an M2C ( it was done on an M3 or M4).

Talk about a useless comparison lol

[Ceramic Rabbit]

Originally Posted by FSU_Logan

Talk about a useless comparison lol

Yeah and there's no way you're getting anywhere close to 18 WHP from just a mid pipe, even 5 WHP seems unlikely... That's a lot even for a full system lol

[mike@x-ph.com]

Originally Posted by Ceramic Rabbit

Yeah and there's no way you're getting anywhere close to 18 WHP from just a mid pipe, even 5 WHP seems unlikely... That's a lot even for a full system lol

Active posted a dyno with the gains on the M3/M4, which has the same engine/turbo and midpipe setup

[Ceramic Rabbit]

Originally Posted by mike@x-ph.com

Active posted a Dyno with the gains on the M3/M4, which has the same engine/turbo and midpipe setup

David from AA just said on this exact forum a few days ago (below) they don't expect any power gains at stock boost levels with the mid-pipe, not sure what exactly the Dyno charts are showing but 18WHP and 30 lb/ft of torque seems more than ridiculous for a mid pipe and goes against what AA just said

https://f87.bimmerpost.com/forums/showthread.php?t=1560473&page=2

[mike@x-ph.com]

Originally Posted by Ceramic Rabbit

David from AA just said on this exact forum a few days ago (below) they don't expect any power gains at stock boost levels with the mid-pipe, not sure what exactly the Dyno charts are showing but 18WHP and 30 lb/ft of torque seems more than ridiculous for a mid pipe and goes against what AA just said

https://f87.bimmerpost.com/forums/sh...1560473&page=2

David was asked
how much hp/tq + spool gain is there in the full 3.5 "signature" vs only the midpipe + stock diaper?

and he answered by saying not much difference on stock level.


The comparison is between midpipe w/ axle back vs midpipe on its own.
Stock is not mentioned in this comparison.

Check the S55 section in the F80, the midpipe showed gains compared to stock

[VIERsr]

Do you guys believe everything you see? Or do you sometimes ask yourself questions?
18 WHP (5% over stock) with a mid pipe, it sounds really funny, at least as much as the 17 hp declared by BMS with their CAI. You could gain 35 hp only with a mid pipe and an air filter without touching the ECU, absolutely hilarious. This is not an upgrade, this is a miracle

[mike@x-ph.com]

Originally Posted by _RS4_

Do you guys believe everything you see? Or do you sometimes ask yourself questions?
18 WHP (5% over stock) with a mid pipe, it sounds really funny, at least as much as the 17 hp declared by BMS with their CAI. You could gain 35 hp only with a mid pipe and an air filter without touching the ECU, absolutely hilarious. This is not an upgrade, this is a miracle

Active provided their own dyno and encourage customers and doubters to dyno their cars as well, what else can you ask from them?

[VIERsr]

Maybe an indipendent dyno could solve our doubts .
Anyway, here nobody doubts about the great quality of AA products, it's the best exhaust you can buy at the moment for value for money, but 18 WHP with a mid pipe are clearly not possible

[NY135ivishnu]

Has anyone looked under the car? There are two cats that the AA mid removes. Giving some type of power increase

[Ceramic Rabbit]

Originally Posted by NY135ivishnu

Has anyone looked under the car? There are two cats that the AA mid removes. Giving some type of power increase

Im not sure about that, I thought the main benefit of the mid was basically just the sound since it consolidates two 3 inch pipes into a single 3.5. They also mention increased exhaust velocity from a single pipe which they claim helps performance, but didn't say anything about removing cats. Do you mean the EU OPF cats?

[NY135ivishnu]

Originally Posted by Ceramic Rabbit

Im not sure about that, I thought the main benefit of the mid was basically just the sound since it consolidates two 3 inch pipes into a single 3.5. They also mention increased exhaust velocity from a single pipe which they claim helps performance, but didn't say anything about removing cats. Do you mean the EU OPF cats?

Originally Posted by Ceramic Rabbit

Im not sure about that, I thought the main benefit of the mid was basically just the sound since it consolidates two 3 inch pipes into a single 3.5. They also mention increased exhaust velocity from a single pipe which they claim helps performance, but didn't say anything about removing cats. Do you mean the EU OPF cats?

Pictured below. The AA mid pipe removes two cats and a resonator.

[Ceramic Rabbit]

Originally Posted by NY135ivishnu

Pictured below. The AA mid pipe removes two cats and a resonator.

Yeah that's interesting, I'll check under my car when I get it

[VIERsr]

The increase in power occurs when removing the primary kats in the downpipes, if you remove the secondary kats you will not get a significant increase in power because you still have two restrictions on the top of the exhaust line. Replacing the primary kats with de-kat dps or 200 cells kats will give you a handful of hp.

[mike@x-ph.com]

Originally Posted by _RS4_

The increase in power occurs when removing the primary kats in the downpipes, if you remove the secondary kats you will not get a significant increase in power because you still have two restrictions on the top of the exhaust line. Replacing the primary kats with de-kat dps or 200 cells kats will give you a handful of hp.

Thats not what the dyno shows