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      10-24-2014, 10:25 AM   #1
Sean@PSI
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Defining The M4 Club Sport (PSI SEMA Build)

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While the SEMA Show was not the full end game we had in mind when our Sakhir Orange M4 arrived months ago, it was certainly the first major stop on a fantastic journey we had mapped out. From the beginning, we all knew the implications involved, and that our vision of an M4 "Club Sport" theme had to be unique yet purposeful. As usual with the aftermarket industry, and with building a project like this one, it boils down to finding that balance.

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With this foundation to work from, we laid out the plans even before the M4 arrived at our doorstep. Working with several companies, the outline came together in stages. While the initial version with Volk TE37 SL wheels and H&R springs was sufficient at first, the best was most definitely yet to come. By the time Vorsteiner had released their carbon fiber GTS aero front spoiler and rear diffuser, it was game time.

It is hard to describe exactly how much of an impact these Vorsteiner pieces make to the F8x platform, even with the aid of photos. The lines and curves each accentuate the factory angles perfectly, and yet add infinitely more dimensions, challenging your mind to try and keep up. Along with the spoiler and diffuser, a set of gleaming Vorsteiner exhaust tips fill out the diffuser area in ways the OEM exhaust never could. Things ramped up even more when Brembo sent over a giant set of their GT 380mm front and rear big brakes with blinding yellow calipers. While installing these, we added some sturdy extended studs from Motorsport Hardware, upon which we then hung a custom set of wheels courtesy of Vorsteiner. Rather than going with the usual mesh or cross-spoke design, we imagined something a bit bolder, and requested their VSE-005 Special Edition Forged wheels in Textured Gunmetal finish.

At the same time, we addressed ride height and stance by reaching out to our friends at BC Racing, who supplied us with their prototype system for testing purposes. So far we can reveal that the ride quality is wonderfully supple, and we are still in the process of dialing in the best spring rate and camber plate setup for various street and track functions. This is the first step in developing the Triple Adjustable setup on the F8x platform, and the finished product will be hitting the market soon.

For those of you not familiar, Sabelt is a world class OEM and motorsport seat manufacturer based in Italy, and has been a supplier for F1, GP2, F3, WRC, LeMans Series, and FIA GT Championship teams. To really give our interior that competition touch, we sourced a breathtaking pair of their GT600 Race Bucket seats with full one-piece carbon fiber shells. Just the weight savings alone is impressive - each seat weighs well under 14 pounds. What really makes our knees perceptibly weaken are the design and details that go into this setup. Sabelt developed the Zy-Tex harnesses for use in Formula 1, and it is the lightest webbing material currently certified for use in an FIA homologated harness setup. This new material, dubbed ZY-TEX 49, is exclusively used by Sabelt, and is composed of ultra-high strength fireproof fibers, woven with specific tooling and impregnated with a flame resistant anti-abrasion coating.

In simple terms, this is the best competition seating and safety system you can get for your F8x. Our Saloon Gold Series belt restraint setup consisted of 3-2" Hans compatible shoulder belts with 3" lap and pull down straps. Settle into the deeply bolstered buckets, fasten the 6-point race harness securely with the aluminum quick adjuster, and suddenly you are on the DTM grid, ready for launch. With no real use for rear seats at this point, and plenty of use for additional chassis stiffening, we continued the Club Sport theme with our DTM-style bolt-in half roll cage, painted to match the exterior. With an Alcantara closeout panel finishing the space behind the front seats, there is very little to suggest that you are not in a BMW M4 GTS. In our eyes, that very sensation means our Club Sport mission is accomplished.

To give our twin-turbo powerplant some room to breathe, we installed one of the first sets of Gintani stainless steel downpipes. Paired with BMC filters and a JB4 Beta, this is one M4 that has a fair bit of push. The midrange has become even broader, and there is a monstrous, seamless shove from just off idle clear up to redline. Our team has been building BMWs of all descriptions for many years, and while our passion runs deep for all of them, this one is by far the project that best defines who we are. We are very excited for the upcoming SEMA 2014 Show, and as we send off our Club Sport to join the festivities, we envision a bright future with the scorching hot Sakhir Inferno.

Look for us at the BC Racing Booth number 21631 during the SEMA Show!

Complete Modification List:

Vorsteiner GTS carbon fiber front spoiler
Vorsteiner GTS carbon fiber rear diffuser
Vorsteiner VSE-005 Forged 19x10" front / 19x11" rear
BC Racing prototype coilovers with camber plates
Brembo GT 380mm slotted front / rear big brake kit
Gintani downpipes
S55 JB4 Beta
BMC filters
Vorsteiner exhaust tips
Sabelt GT600 Full Carbon Fiber Race Bucket seats
Custom floor mounts with Sabelt sliders
Sabelt aluminum side mounts
Sabelt 6-point Zy-Tex safety harness
PSI custom bolt-in half roll cage
rear seat delete with Alcantara closeout
iND painted reflectors
BMW Performance front grille surrounds
Custom coding by BPM Sport


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Last edited by Sean@PSI; 10-24-2014 at 12:41 PM..
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      10-24-2014, 10:33 AM   #2
Greg FEightytwo
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Where did you get the diffuser?
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      10-24-2014, 11:27 AM   #3
metrickid
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Wow, hands down the worst wheel I have ever seen on a BMW!

Besides the wheels! Awesome!
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      10-24-2014, 11:43 AM   #4
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Quote:
Originally Posted by GSM4
Where did you get the diffuser?
Looks like Vorsteiner to me.
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      10-24-2014, 12:26 PM   #5
VMRWheels
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Very nice, quality build
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      10-24-2014, 12:56 PM   #6
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TE37SL was much better. This wheels looks like from another car...
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      10-24-2014, 01:02 PM   #7
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Love everything about the car except the wheels and the BC racing coilovers. The wheel design just seems to cheapen the look of the car. And BC racing coilovers on a legit sports car should be made illegal.
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      10-24-2014, 01:57 PM   #8
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I like the TE-37s better, cool ride though
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      10-24-2014, 03:09 PM   #9
VCP
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Yes man! Nice work right there! Love the wheels and tire profile.
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      10-24-2014, 03:21 PM   #10
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Quote:
Originally Posted by applesauce683 View Post
Love everything about the car except the wheels and the BC racing coilovers. The wheel design just seems to cheapen the look of the car. And BC racing coilovers on a legit sports car should be made illegal.

massive +1 on the BC racing CO's. cheap tat.
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      10-24-2014, 03:25 PM   #11
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Quote:
Originally Posted by Powaup View Post
I like the TE-37s better, cool ride though
+1 on the TE-37's
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      10-24-2014, 03:28 PM   #12
Maz335i
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Wow Sean, your M4 looks amazing!

I can already envision how my F80 will look soon!

You guys have done a great job and I can't wait to see more pics. Plz pm me once you get info on those sideskirts we were talking about.
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      10-24-2014, 03:32 PM   #13
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I love the vorsteiner pieces, the TE's seemed a bit "prettier" IMO.

But what an excellent build. I've loved following it along the way.
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      10-24-2014, 03:36 PM   #14
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cool
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      10-24-2014, 03:37 PM   #15
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Such a beautiful car, mods, and stunning photos. But BC coils?
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      10-24-2014, 03:41 PM   #16
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VERY cool setup! I love the interior with the seats. Most people don't realize how much of a performance upgrade seats are. I have Sparco seats in my car and the chassis is MUCH stiffer than the stock seats and you can feel everything through the seat of you pants.
You're lucky it's a DCT trans. Mine is a 6-speed and I had to remove my center console door because my elbow hit it everytime I would shift.

+20 for the wheels. Not feeling them at all. Personally, I'd go with BBS FI rather than the TE37, but the TE37 aren't shabby either.
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      10-24-2014, 03:48 PM   #17
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this is a great set up love that diffuser but really could use some better looking wheels
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      10-24-2014, 04:23 PM   #18
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Usually not a fan of these kinds of projects, but this is an exception. Real nice work. Just needs one clutch, not two
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      10-24-2014, 04:47 PM   #19
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jeeze that exhaust tips look sick, what kind are they?
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      10-24-2014, 05:09 PM   #20
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I bet this car is one fast beast with a race suspension and JB4 tune.
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      10-24-2014, 05:10 PM   #21
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Awful wheels.

They look like Audi Q5 wheels.



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      10-24-2014, 05:18 PM   #22
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One thing I have to say.

Thank you for leaving the CSL style trunk lid untouched. The BMW perf spoiler that goes over the lip of the trunk just doesnt look good in my opinion.
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