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As a celebration of thirty years of STi, Subaru introduces its 2019 WRX STi Diamond Edition, a halo model in its performance car line-up.
Developed by the technical team at Subaru Southern Africa, the Diamond Edition is exclusive to the region and only 30 vehicles will be sold.
The heritage of STi
There is a powerful and nostalgic heritage behind the name of the motorsports and performance subsidiary of Subaru Corporation, Subaru Tecnica International. STi.
GALLERY: 2019 SUBARU WRX STi Diamond Edition
Three letters that have commanded the respect and passion of performance for enthusiasts for three decades. In thirty years, these three letters are adorned the racing lapels of motorsport royalty, dominated the world stage of rally and circuit racing and a reputation for slaying the most venerated competition.
Officially registered in April 1988, STi made headlines from the very beginning, breaking the World Speed Endurance record in a 164kW Legacy RS RA. The car completed 100,000 km over 20 days at an average speed of 223km / h.
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In 1993, Subaru debuted a new blue and yellow Legacy RS race car driven by Scotsman, Colin McCrae, who was riding for a first victory for the team at the New Zealand Rally.
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In 1994, STI signed WRC Champion Carlos Sainz to the team and together with McCrae, became the team to watch that season. Subaru placed second overall in the 1994 World Rally Championship with Sainz placing second in the drivers' standings and Colin McCrae fourth.
From 1995 to 1997, Subaru dominated the WRC winning the constructors' championships for three years in succession, making world champions Colin McCrae and Tommi Makinen in the process.
It was a hat-trick of victories that cemented the signature Subaru STi World Rally Blue hue and rumbling sound into the minds of fans the world over.
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Thereafter, the STi-team continued to be competitive with the Subaru Impreza STi crowned another driver's champion Petter Solberg in 2003. The Subaru's dominance on the world is testament to its versatility and all-round ability on every field the world rally had to offer.
So much more in rallying, STi officially withdrew from the World Rally Stage in 2008 and instead focused on endurance racing. In 2008, it entered WRX STI in Germany's 24 Hours of the Nurburgring.
The narrative reads very similar to the WRC story – STi has dominated the SP3T class in which it competes, winning in 2011, 2012, 2015, 2016 and 2018, often in the most treacherous wet weather.
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In just 30 years, STi has crowned Subaru with 3 Constructors World Rally Championship titles, 3 World Rally Championship Drivers' titles, 47 World Rally Championship overall wins and 5 class wins in Germany's 24-Hour Nürburgring races.
This excludes the myriad championship victories by Subaru works in regional rally exploits in Canada, America and Australia.
Apart from these, there are numerous record and production record record honors including the famous 2016 Isle of Man lap record 2018 record 40-minute 58.8 second speed run of the infamous Transfagara an Highway in Romania. Both of these feats were completed by veteran rally Mark Higgins in specially prepped WRX STi's.
Whilst results and championships are the statistical highlights of the STi's history, the STi philosophy
Development process
In anticipation of 2018 marking the thirtieth anniversary of STi, the Subaru Southern Africa embarked on a development project to produce a more powerful version of the iconic performance sedan.
The STImulating Edition STi was launched in South Africa only.
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In 2004, Subaru SA delivered 15 special edition versions of the Impreza WRX STi. Based on the standard model, the limited-edition STimulating STi developed 195kW of power and 343Nm of torque. These cars were a celebration of 15-years of STi and they have become collectors' items.
The Diamond Edition follows the same tradition – a limited-run project of just 30 unique vehicles as an ode to 30-years of STi.
The project was spearheaded by the Subaru Southern Africa (SSA) team and led by Technical Manager of Subaru SA, Deon van Heerden and the objectives were clear. He said: "We needed to get a rebate and create a more powerful and something that would become a talking point for STi fans."
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The first development mule arrived in December 2016 and official Diamond Edition performance development started in January 2017. It took 18-months to develop a point where Subaru SA was completely happy with the results and the outcome.
It was a process of substantial durability and wear testing, oil testing and dyno tuning. Whilst the technical department was responsible for the performance enhancement, they were also involved in the design process, which would have been more appealing and would gain a unique styling edge.
Exterior enhancements
Compared to the standard WRX STi, the Diamond Edition has more aggressive stance and features stand-out elements. Making use of spacers on all wheels, the car is 20mm wider than the standard car.
Another key identifier of the Diamond Edition is an all-round body kit finished in the same High Viz yellow hue that adorns the Brembo calipers brake. The kit lowers the car by 10mm at the front adding to the stadium and gives the Diamond Edition a unique, stand-out presence.
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On each vane of the spoiler kit, a small yet distinct stainless steel STi badge – another unique identifier of the Diamond Edition that is complemented by the high gloss black 30 Diamond Edition badges on the sides of the rear wing.
The signature STi features remain unchanged: The hawk-eye LED Daytime Running Lights; the wide bonnet intercooler scoop at the front and rear spoiler. The STI is fitted with a 19-inch 245/35 R19 rubber on darkened, lightweight, aluminum Y-design alloys.
Also, new on the MY2019 WRX are the most important conditions.
Unique interior touches
Limited to just thirty units, the Diamond Edition incorporates Diamond Edition detailing in the cabin. New Facet-Designs on the driver and passenger dashboard inlays are unique to the Diamond Edition cars, with an exclusive numbered panel on the driver's side.
The WRX STi Diamond Edition also features a 7-speaker, 440W Harmon Kardon power speaker system. The 7.0 "Touch Screen Infotainment System with 6-speaker CD and Bluetooth hands-free functionality now incorporated Apple CarPlay and Android Auto applications too.
Performance is everything
The main objective in creating the WRX STi Diamond Edition was to increase the power and performance of the vehicle.
This is the essence of Confidence in Motion. Deon Van Heerden says this was a key focus.
"We definitely wanted to achieve more, but I think we've achieved just that," he says.
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"We have managed to develop the fastest and most powerful production ever published in South Africa and I am very proud of our team." Deon Van Heerden's mission has been accomplished.
The increase in power has been achieved through a remapping of the electronic control unit and the performance of a performance exhaust system. The 2.5 liter, high-boost turbocharged Boxer engine is now a feisty 260kW at 4,500rpm and doles out 464Nm of torque at 4,000rpm.
Top speed remains 255km / h but the 0 – 100km / h has been significantly shortened. Tested in Gauteng at an altitude of 1 410m above sea level, the Diamond Edition achieved a 5 second 0 – 100km / h time, 0.7 second quicker than its standard WRX STi sibling under the same conditions.
The 0 – 160km / h time has also been exceeded with the Diamond Edition posting at 13.7 second time and the standard vehicle posting at 14.7 second time.
To the team with the extra performance, the Subaru SA team also fitted a new STi engine for increased stability and balance. The resulting force is kept in check by the formidable stopping power of the Brembo braking system that features 6-pot calipers at the front + 2-pot calipers at the rear. This system also features 4-sensor / 4-channel ABS with Electronic Brake-force Distribution.
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Handling on the WRX STi is courtesy of a Subaru's famous Symmetrical All-Wheel Drive system combined with a multi-mode electronic Driver Controlled Differential Center (DCCD).
The electrically-assisted quick ratio steering wheel is weighted to the sporty nature. This allows the road to travel with confidence and speed.
The entire driving experience of the WRX STi is for the purist driver – mechanical, visceral, raw and powerful. The Subaru signature rumble on the WRX STi has been enhanced.
The power is delivered through a longer and lower torque curve, the steering is sporty, and the six-speed manual transmission feels perfectly firm and mechanical, adding to the purist focus driver. It's a driver's through and through.
Safety
The MY2019 WRX STI Diamond Edition is a 5 * safety achiever. In 2018, revisions to the front frame structure were made for improved safety in frontal collisions.
The Diamond Edition STi is fitted with Active Torque Vectoring, Subaru Vehicle Dynamics Control and seven airbags including a knee airbag driver.
The front seats have been designed to reduce the risk of collision and the loss of a vehicle.
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Coupled with the safety of Symmetrical All-Wheel Drive and Boxer Engine Technology, the WRX is a pure example of safety and performance.
The car also features a number of driver assistance systems such as the Front and Rear Cameras for safe and optimal positioning; Blind Spot Detection and Rear Cross-Traffic Alert.
Only 30 get a chance to own it
The exclusive nature of the Diamond Edition means that only 30 units will be prepped and delivered to customers in South Africa. As part of the customer's experience and identification of the customer, the purchaser's certificate will be issued to the customer.
Pre-orders of this halo model started in November 2018 through selected Subaru dealerships with deliveries of the car program for January 2019.
Pricing is set at R799 000 inclusive of a 3-year or 75,000km Full Maintenance Plan and a 5-year or 150,000km warranty.
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