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      01-31-2012, 08:50 PM   #1
crfine88
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DKF Exhaust Systems Official Group Buy

BIMMERPOST / Classifieds
Asking Price:
None
Item Interest
Hey Zpost, DKF wanted me to let you know that this exhaust project is still very much alive. DKF ran into some speedbumps that they are in the process of ironing out.

A new time line for the group buy will be introduced once everything is worked out.

If there is a Z4 M in the phoenix area with open flow headers that is willing to do some testing, send me a PM.

Thanks,
Chris



DKF Exhaust System Group Buy:



The Basic Idea:
All of the combinations of DKF components will make similar power (+/- 5%). Then why the abundance of options you ask? (This is the first question I asked)
The answer is simple…SOUND
There is one thing we can all agree on when it comes to exhaust upgrades… maximum performance.
Then there is one thing that almost no one agrees with when it comes to exhaust upgrades… sound.
This is where I believe DKF may have outdone themselves. There are going to be several different resonators, catalytic converters, race pipes and mufflers offered. In the end we should be able to fine tune and find the exact exhaust note we are looking for. For me it will probably be somewhere on the raw motorsport end of the spectrum.

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Side by Side DKF/OEM:

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Finish:
All components have been Jet Hot ceramic coated. Although the finish looks great, the purpose of the ceramic coating goes far beyond appearance.
Short version: The DKF system increased the diameter of the exhaust system to allow for a greater volume of gas to escape. The increased diameter of the exhaust tubing slows the velocity of the exhaust gases; the ceramic coating brings the velocity of the exhaust gases back up to speed. End result; Greater flow and balanced velocity.








Hardware:

With the DKF “Header Back” exhaust system, the connection between the headers and the S-pipe is the only OEM style hardware found. The remaining six connection points utilize racing flanges and racing clamps to optimize flow and limit turbulence.

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Hangers:

-For anyone who has installed exhaust on our cars and worked hard to get the perfect tip alignment, DKF has created a serious solution for this. The hangers allow left to right and up and down adjustment independent of one another. This is a huge improvement when compared to the spherical joint that BWM uses where all alignment relies on the spherical joint and a two bolt flange.

-The hangers have also been designed to dampen and help eliminate drone by using an isolation pad between the hangers and body, isolation mounts between the mufflers and the hangers and isolation washers

-Stainless steel laser welded construction for sereious strength

In a word AWESOME!

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Informative Links:

For more in-depth information on the research that went into the system, see the attached link:

http://www.zpost.com/forums/showthread.php?t=419023

System testing will continue while the group buy is active. For current information regarding system testing, see the attached link:http://www.zpost.com/forums/showthread.php?t=612475

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Last edited by crfine88; 04-06-2012 at 04:52 PM.
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      01-31-2012, 08:50 PM   #2
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Section 1 components:
S-Pipe:
The stepped S-pipe is one of two components that make up the “section 1” in the DKF system. The S-pipe is a stepped from 2.25” to 2.50” because of the exhaust valve port size and the timing of the exhaust pulse. In short, the purpose is to carry the highest velocity possible before the next diameter change.

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(the following resonators and straight pipes are options to complete the “section 1” more options will be added as the post is updated)

Street V1 Resonators:
-eliminates the majority of rasp
-maintains maximum performance

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Street V2 Resonators:
-completely eliminates rasp
-slightly less performance than the V1

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Sport V1 Resonators:
-reduces rasp
-louder than the Street versions

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Race V1:
-open bypass pipe with O2 bungs (bung locations for Euro spec cars or US spec car with relocated rear O2’s)
-no silencer, loudest option

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CTL 100:
-100 Cell Race Cat with O2 bungs

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Section 2 components:

X-Pipe:
The x-pipe is one of three components that make up the “section 2” in the DKF system. DKF designed the X-pipe with minimal bends and minimized bend angles to pull off the least amount of restriction. The thing that surprised about the X-pipe is the fact that you can see straight through it from one end to other.

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(the following mufflers are options given to complete “section 2” more options will be added as the post is updated)


Street:
-The lowest volume option offering better performance than stock, but less than the Sport and Race options
-Work in progress @ DKF, pics will follow



Sport:
-Resonated with open flow turbine

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Race:
-Open flow turbine

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Adaptors and Connecting Elements for OEM style Interface:


Adaptors:
-Ataptors designed for connecting DKF X-pipe to OEM S-Pipe

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Ressonator to OEM X-pipe:
-Designed to work with OEM and other OEM flange style X-pipe designs

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Race pipe to OEM X-pipe:
-Designed to work with OEM and other OEM flange style X-pipe designs

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Last edited by crfine88; 01-31-2012 at 10:41 PM.
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      01-31-2012, 08:51 PM   #3
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Group Buy Pricing and Timeline:


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Important Dates/Info
-The Group Buy Begins 01/31/2012
-The Group Buy Ends date will be determined once dyno info is collected
-Payments must be Recieved by TBD
-Invoice/Payments will be secured through Pay Pal
-Delivery will take place 30-60 days after 3/22/2012
-DKF contact info:
dkfperformance@gmail.com

For Invoiceing/shipping DKF will need Pay Pal user name, name, email, adress and phone # sent to their e-mail
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Last edited by crfine88; 03-13-2012 at 07:57 AM.
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      01-31-2012, 08:52 PM   #4
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Updated 02/04/2012 0530

Group Buy List:

1. crfine88 - S-pipe/Race bypass or 100 cell cats pending dyno/X-pipe/Sport Mufflers/Hangers
2. O-cha - S pipe and oem flanged straight pipe to X
3. tomprest - tomprest S-Pipe Sec1S, Sport resonator St2L, X-Pipe Sec2x, Sport muffler StxL, Hangers
4. habitat412 - s-pipe/ race v1/x-pipe/race mufflers/hangers and a side order of cell 100 when I need to go for emissions
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Last edited by crfine88; 03-28-2012 at 06:07 AM.
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      01-31-2012, 08:55 PM   #5
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Updated with four Videos.
Quote:
Originally Posted by crfine88 View Post
OEM (No DKF components)





DKF S-pipe, DKF street V2 resonators, DKF x-pipe, DKF Sport mufflers, DKF hangers





DKF S-pipe, DKF 100 cell cats, DKF x-pipe, DKF Sport mufflers, DKF hangers






DKF S-pipe, DKF Race bypass pipes, DKF x-pipe, DKF Race mufflers, DKF hangers

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Last edited by crfine88; 03-26-2012 at 07:58 AM.
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      01-31-2012, 09:20 PM   #6
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If only they made a set for non-M Z's.
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      01-31-2012, 10:52 PM   #7
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Quote:
Originally Posted by Kurumi
If only they made a set for non-M Z's.
I know right. I would buy a system like this in a second.
Hint hint! Please make one!
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      02-01-2012, 12:55 AM   #8
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Sorry to jumble up the group buy thread. The minimum to get started with this system would be X pipe, mufflers, adapters and hangers and this would fit to the existing section 1?
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      02-01-2012, 03:00 AM   #9
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Is there any possibility to compare dynos with EURO headers + rest of system stock + tune and EURO headers + all DKF rest of the system (any choice you like) + tune (any tune you like)

Because I believe that the gains are due to the headers and maybe 5-10HP due to DKP and this business of DKF giving 30 hp or whatever is just completely utterly bullshit.

Not to mention the retarded tag price for a a group buy without dynos.

no offence to you crfine888
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      02-01-2012, 03:06 AM   #10
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      02-01-2012, 07:08 AM   #11
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Group Buy List:

1. crfine88 S-pipe/Race bypass or 100 cell cats pending dyno/X-pipe/Race Mufflers/Hangers
2. Beedub - S-pipe/100 Cell Cats/x-pipe/Sport mufflers/Dampened Hangers.....(pending important info RE s/c tune compatibility/db rating & tip protrusion).
3.
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5.
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7.
8.
9.
10.
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      02-01-2012, 10:56 AM   #12
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S pipe and oem flanged straight pipe to X
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      02-01-2012, 12:51 PM   #13
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Wonder if the s pipe will fit non m 's with headers?
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      02-01-2012, 06:59 PM   #14
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Add me
tomprest S-Pipe Sec1S, Sport resonator St2L, X-Pipe Sec2x, Sport muffler StxL, Hangers
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      02-02-2012, 08:17 AM   #15
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Quote:
Originally Posted by Kurumi View Post
If only they made a set for non-M Z's.
Quote:
Originally Posted by RevsPlease View Post
I know right. I would buy a system like this in a second.
Hint hint! Please make one!
This is just the first project for DKF. With enough interest, non-M's could be next
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      02-02-2012, 08:17 AM   #16
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Quote:
Originally Posted by Barryb97 View Post
Sorry to jumble up the group buy thread. The minimum to get started with this system would be X pipe, mufflers, adapters and hangers and this would fit to the existing section 1?
You are correct
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      02-02-2012, 08:20 AM   #17
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Quote:
Originally Posted by tikamak View Post
Is there any possibility to compare dynos with EURO headers + rest of system stock + tune and EURO headers + all DKF rest of the system (any choice you like) + tune (any tune you like)

Because I believe that the gains are due to the headers and maybe 5-10HP due to DKP and this business of DKF giving 30 hp or whatever is just completely utterly bullshit.

Not to mention the retarded tag price for a a group buy without dynos.

no offence to you crfine888
I am working on collecting more dyno information. The group buy was released now so DKF could hit a reasonaable production timeline and allow ample time for those of us interested to come up with funds.
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      02-02-2012, 08:23 AM   #18
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Quote:
Originally Posted by Radar vs Sonar View Post
I know, right! it's been going on for a long time

Quote:
Originally Posted by Beedub View Post
Group Buy List:

[2. Beedub - S-pipe/100 Cell Cats/x-pipe/Sport mufflers/Dampened Hangers.....(pending important info RE s/c tune compatibility/db rating &
[/size][/b]
reserved #2 for you
Quote:
Originally Posted by O-cha View Post
S pipe and oem flanged straight pipe to X
added
Quote:
Originally Posted by jra View Post
Wonder if the s pipe will fit non m 's with headers?
I don't thinks so, but that would be a good question to e-mal DKF
Quote:
Originally Posted by tomprest View Post
Add me
tomprest S-Pipe Sec1S, Sport resonator St2L, X-Pipe Sec2x, Sport muffler StxL, Hangers
added
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      02-03-2012, 10:05 PM   #19
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How many hangers are included at the GB price? Is that each or for a set?
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      02-03-2012, 10:29 PM   #20
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wtf? over 4k for an exhaust system lol
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      02-03-2012, 11:33 PM   #21
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crfine88 do you have photos and info on the race bypass v2 and 300 cats?
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      02-03-2012, 11:36 PM   #22
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Either way sign me up for the s-pipe/either race v1 or v2/x-pipe/race mufflers/hangers and a side order of cell 100 when I need to go for emissions
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