Impreza Subaru Impreza WRX STI Spec C


The Subaru Impreza is a compact car that has been manufactured by the Subaru since 1992. It was introduced as a replacement for the Leone, with the predecessor's EA series engines replaced by the new EJ series. It is now in its sixth generation.

Giannis

Staff member
PRESS RELEASE

FHI to introduce the Subaru Impreza WRX STI spec C

Tokyo, July 23, 2009 - Fuji Heavy Industries Ltd. (FHI), the maker of Subaru automobiles, today launches the "Subaru Impreza WRX STI spec C", a new addition to the current WRX STI line-up. The model goes on sale today through Subaru dealerships in Japan.

Based on the Impreza WRX STI, the iconic sport model of Subaru, the WRX STI spec C model features enhanced engine and chassis performance as well as a lighter body on the premise of driving in motor sports. The model further strengthens its presence in the high performance car arena by offering sheer excitement and unique driving sensations as a distinctive road sport model, in line with the performance level originally delivered by the Impreza WRX STI.

The turbocharger newly adopted ball bearings for the turbine axle bearing, and the ECU (Engine Control Unit) program was also exclusively tuned. Thus the engine of the spec C model provides quicker response and improved accelerating performance. Thanks to its specially designed front & rear suspensions and improved body rigidity, the chassis offers stable and linear driving control even in marginal driving conditions. The adoption of an aluminum engine hood, laminar window glasses and a downsized battery resulted in a lighter body, which further polishes the model's driving performance.

Subaru enhanced the WRX STI line-up by introducing this STI spec C model, in addition to the STI A-Line model, the AT version introduced in February this year.


Outline of Subaru Impreza WRX STI Spec C

Enhancement of Engine performance:

•• Ball bearings of the turbine axle were newly adopted to reduce friction in the turbocharger. With the optimized ECU programming, the engine offers smoother and quicker response to the accelerator pedal and excellent accelerating performance.
•• An inter-cooler water spray prevents rise in intake-air temperature at continued high-load driving, providing stable engine performance and improved efficiency.

•••• ••••:

Enhancement of Chassis performance:

•• Reinforcement of the cross member in front-suspensions offers a linear steering response.
•• Specification changes in damping force of suspensions, coil spring rate, rear stabilizer and rear sub-frame bushes optimize rigidity for body roll and retain excellent road-holding capability.
•• Rear LSD (Limited Slip Differential) system was changed to a mechanical type from a Torsen type to obtain the steady and powerful traction during cornering.
•• Bridgestone "POTENZA RE070" (245/40R18) were adopted to enhance cornering ability and higher grip performance, especially in dry conditions.
•• Nimble handling with a firm steering feel is assured by increasing oil flow volume in the power steering system.

Lightened body:

•• An aluminum engine hood and a downsized battery, which make the front section of the vehicle lighter, produce better maneuverability.
•• Laminar glasses were adopted in the front and side windows. They lightened the upper section of the body weight, resulting in improved stability during cornering.
•• Newly-designed lightweight 18-inches alloy wheels are standard to offer excellent road-hugging property by reducing unsprung weight. (17-inches alloy wheels are optional)
•• A flat tire repair kit is standard, which also helps weight reduction.

Others:

•• A structural change of fuel pomp provides stable fuel delivery even on high-load driving.
•• Gold colored "brembo" brake calipers are standard.
•• The front bucket seats (fabric with red stitch) are standard on models with 18-inches alloy wheels.
•• The "RECARO" seats (Alcantara and leather combination with red stitch) are optional on models with 18-inches alloy wheels.
•• Two exclusive exterior colors are available; Sunrise Yellow and Pure White.
•• The production is limited to 900 units.

Major specifications:

-Engine type: Horizontally-Opposed 4-cylinder DOHC 16-valve turbocharged engine

-Displacement: 1,994 cc

-Maximum output: 227kW (308 PS)/6,400 rpm

-Maximum torque: 422 Nm (43.0 kgf·m)/4,400 rpm

-Turbo type: Ball-bearing type twin scroll turbocharger


About Fuji Heavy Industries Ltd.

Fuji Heavy Industries Ltd. (FHI), the maker of Subaru automobiles, is a leading manufacturer in Japan with a long history of technological innovations that dates back to its origin as an aircraft company. While the automotive business is a main business pillar, FHI's Aerospace, Industrial Products and Eco Technologies divisions offer a diverse range of products from general-purpose engines, power generators, and sanitation trucks to small airplanes, crucial components for passenger aircrafts, and wind-powered electricity generating systems. Recognized internationally for its AWD (all-wheel drive) technology and Horizontally-Opposed engines in Subaru, FHI is also spearheading the development of environmentally friendly products and is committed to contributing to global environmental preservation.

Tags: impreza wrx sti spec c, ImprezaWrxStiSpecC, spec, spec c, SpecC, sti, sti spec c, StiSpecC, subaru, subaru impreza, subaru impreza spec c, subaru impreza wrx sti, subaru impreza wrx sti spec c, subaru sti, subaru tecnica international, subaru wrx sti spec c, SubaruImpreza, SubaruImprezaSpecC, SubaruImprezaWrxSti, SubaruImprezaWrxStiSpecC, SubaruSti, SubaruTecnicaInternational, SubaruWrxStiSpecC, wrx sti spec c, wrx sti spec cwrx sti spec c, WrxStiSpecC

ad4662d312dcd81c79c00249cff83825.webp


5e11f42d9b5092195be4b04a30a9796e.webp
 
A W E S O M E. Tears of joy and sadness in one go because a) it's an engineering masterpiece but b) unless you order one for competition use, you'll not get your Spec C through official Subaru agents. However, UK enthusiasts are well catered for by Litchfield who undoubtedly have the Spec-C on their order catalogue.

Thanks Giannis for the excellent coverage.

4747255bca52059728672fbc6e7af6f0.webp


Above is a terrific illustration of a twin-scroll turbocharger clearly showing the two separate volutes that aim the exhaust pulse at different parts of the exhaust turbine vanes and, at different angles. This improves turbocharger response at low revs and optimises air flow at higher rpm. Same concept as per BMW's Twincharger propoganda - except that Subaru started using this technology over 5 years ago.

613bb86eff4435c25e5fc6f4e413be2e.webp


So, what's with these kak seats? Spec-C stands for competition specification and it's not just some marketing gimmick. Many privateer motorsport enthusiasts and series competitors order the Spec-C in stripped out form with vestigal seats that get ripped out when the car gets race-prepped with roll cage and other racing gubbins. Many rally privateers run stock suspension and brakes.

Of course, in Japan you can have your tar-burning Spec-C in road-going trim with nice leather / alcantara race seats and radio etc...
The addition of the Torsen rear differential to the already formidably impressive DCCD-based AWD system means that this car is going to cling to the road like a limpet and, when accelerating out of corners will understeer far less (if at all) than regular STI's. It's the ultimate "slingshot out of a corner" experience.

And this is, in my opinion, the finest hyperhatch money can buy today:

bda7115359105767f4500492e4d3ca63.webp


I'd so ace one of these given half, no, a quarter of a chance.
 
Hang-on, I'm wrong about something. [I thought it was odd]

There isn't a change to Torsen limited slip diff in the rear but a change from to a purely mechanical unit. ?Confusion? Torsen is already a purely mechanical limited slip differential.

I'm looking into this...
 
I don't care what it looks like - just gimme.

Drove the South African version the other day - heavens above - still one of motoring's more visceral experiences.
 
I would also love to have one, even for that price. It's a far more pure driving experience than what most cars offer in that price segment.
 
Though I'm a NA engine fan, this makes me wish a turbocharged BRZ. I think that is one of the final version before the next WRX.
 

Subaru

Subaru is the automobile manufacturing division of the Japanese transportation conglomerate Subaru Corporation (formerly known as Fuji Heavy Industries). Founded on 15 July 1953, it is headquartered in Ebisu, Shibuya, Japan.

Thread statistics

Created
Giannis,
Last reply from
Levi68,
Replies
12
Views
8,512

Trending content


Back
Top