October 24, 2014

Defining The M4 Club Sport – SEMA Build

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 19×10″ front / 19×11″ 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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October 10, 2014

PSI Bids Shop Manager RC Farewell

Hello Everyone,
This week we bid farewell to our longtime shop manager RC. We will certainly miss his expertise and professionalism with all aspects of our operation, and we know a great many of our customers and friends are just as sorry to see him go. However, RC is headed for the next stage of his life, and we wish him all the very best!
With his departure on Friday, please be sure to email us at sales@precision-sport.com  or contact me directly for anything needed – sean@precision-sport.com.
 
We look forward to working with you in the future.
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October 9, 2014

BMW F8x “Skittles” Suspension Comparison

Here are two BMW F80 M3s we have in for upgrades and our Sakhir M4 all side-by-side to compare the varying colors and suspension options these cars have.

MW F80 M3 – Stock suspension and no spacers (for now).

SO F82 M4 – BC Racing Coil Overs (prototype setup).

AY F80 M3 – H&R Sport Springs (F80 Specific) with 15mm spacers all around.

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October 4, 2014

F82 M4 – BC Racing Prototype Coilover Testing

We have been working with BC Racing to develop multiple coilover options for the F8x market. During the testing stage, we wanted to share some photos with everyone to show the coilover system installed, and how our M4 sits at a variety of ride heights.

There will be multiple options available and all will include camber plates.

More info to follow as it becomes available, but for now enjoy the photos!

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October 2, 2014

Austin Yellow F80 M3 JB4 Beta Installation

The owner of this beautiful F80 M3 has returned for some added power! We have the JB4 Beta on our M4 already, and combined with the Gintani downpipes, it is an entirely different car.

Here are more shots of the JB4 installation:

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September 30, 2014

F82 M4 – Bolt In Roll Bar Installation

Our roll bar finally came back from paint! We were excited to see the exact match Sakhir Orange paint gleaming on the newly-welded metal. Installation into the back of the M4 proved to be a quick and simple matter. We have more installed photos coming shortly, so stay tuned!

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September 23, 2014

Vorsteiner BMW M3/M4 Carbon Fiber Aero Program Photos!

Vorsteiner has just released new photos of their M3/M4 carbon fiber front spoiler and rear diffuser! PSI is absolutely thrilled to be able to share with you the Vorsteiner GTS Program for all BMW F8x models.

The brand new Vorsteiner BMW F8x carbon fiber rear diffuser is a particularly complex feat of ingenuity because of the manufacturing difficulty in creating such slender fins, rarely seen in a one-piece carbon diffuser. All of the aerodynamic components are engineered and designed with state of the art 3D alias software using blue light laser scanning technology and 5 axis CNC milling machines for rapid prototyping. This ensures an exact and precise fit, every time!

We’re very excited to announce the Vorsteiner program for the F8x M3 & M4 chassis which includes Forged or Flow Forged wheels, carbon front spoiler, carbon rear diffuser, custom livery kit, and the upcoming exclusive bespoke exhaust tips!

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September 19, 2014

Austin Yellow F80 M3 in for upgrades

We recently had a gorgeous AY M3 stop in here at the shop for a set of H&R springs, 15mm Macht Schnell spacers all around, and several other cosmetic upgrades. Enjoy the photos!

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September 15, 2014

F82 M4 – Bolt In Roll Bar Development

From the beginning, we knew our “Sakhir Inferno” M4 was going to have plenty of exposure to track events, and in keeping with the motorsport theme we began planning a custom roll bar for added rigidity and rollover protection. One of our many stipulations was that the bar had to be completely bolt-in for easy installation and removal. With the launch of the DTM Safety Car M4 earlier this year, our goal was solidified, and shortly after our M4 arrived we set to work.

Using the M4 Safety Car as a reference, we brought in an expert fabricator to create our own version of the competition roll bar. When tackling a project like this, it helps to have experience on your side, and this person has plenty. The fabricator we contacted has a history of building Grand Am, American Le Mans Series, and Rolex Sports Car Series roll cages with other custom fabrication work.

With the SEMA Show rapidly approaching, our M4 is undergoing significant modification, and this race-spec roll bar will be a major component of this project. Stay tuned for more photos and progress!

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September 4, 2014

KW H.A.S. Sleeve Kit for BMW F80 M3 + F82 M4

PSI is proud to begin offering the new KW Suspension Height Adjustable Spring (H.A.S.) System for the BMW F80 M3 and F82 M4! Those of you who have been looking for a solution that allows you to adjust your ride height while retaining the OEM EDC capability – your time is now.

KW Suspension is a household name today in the world of street and competition suspension systems, and rightly so. Their reputation and quality speaks for itself. The new H.A.S. for the M3 and M4 utilizes front and rear KW progressive-rate springs with threaded height adjusters. Your existing OEM shock absorbers remain in place, allowing all electronic controls to continue unchanged.

The true beauty of this setup, in our view, is the infinite height adjustment afforded by the threaded sleeves, allowing you to pursue that perfect stance while allowing the EDC to function uninhibited. We here at PSI fully support KW products for the M3/M4, as befitting a world-class sports car platform.

Weight: approx. 40 pounds.

Click here for more information!

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~ Team PSI

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