Essbon's Impreza WRX Type R STI Version 5

Essbon

Impreza WRX Type R STI Version 5
Subaru Impreza WRX Type R STI Version 5

Model code GC8F2DD


Little history of my car…

My weekend toy is a Subaru Impreza WRX Typer R STI Version 5

This car has only had one other owner from new who imported this fresh from the factory from land of the rising sun back in 1999.

When I picked her up from a small local garage in Macclesfield, she was pretty much standard, only mod was the HKS Super Dragger centre section and backbox. other than that bog standard, previous owner had kept all receipts of all work and service carried out, so she had been very well looked after.

few pics from the show room



3794
by Essbon on Subaru Impreza WRX Forum


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Within the fist week of ownership, car went straight to www.Scoobyclinc.com for a checkover, a full service, all fluids changed, new cam belt and a set of Defi Gauges (Boost, Oil Temp and Pressure)

the car was in great condition, and drove really well,


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In 2009, it was time to change the power plant out with the 2.0 litre, in with a 2.5 (EJ257) STI bottom end, Mahl forged pistons, version 5 heads (from my old engine) skimmed, standard turbo was kept VF28, scoobyclinic oil cooler, to keep them temps under control. After a running in the new engine, she was mapped on an Apexi Power FC with Commander and made pretty good power on pump fuel (Shell V-Power 99RON) 295BHP 350 FtLbs

Only downside, the standard MAF could not cope with the extra air flow, and I was going through 1 a month, I even had to resort to running with spares in the car. This was quickly resolved an a Nissan MAF Z32 30P00 (compatible with the Apexi) was fitted. This fixed the issue and no more MAF failures.


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2010 and next major work, was to attend to the rusting rear arches, so old arches were cut out and new ones fitted. A V6 front lip was also fitted, to tidy up the front end.


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The Finished Article

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2011, and the standard VF28 turbo died. So in went a scoobyclinic SC46 turbo, 740cc injectors, K&N Cone Filter and Scoobyclinic turbo inlet hose. due to standard 5 speed gearbox still being on the car, mapping was conservative so not to put too much stress on the transmission - 350 BHP 350 FtLbs.

with the extra power and close ratio gear box, the car was awesome, but the limiting factor was now the brakes, the standard STI 4 pots were not up to the mark, and brake fad was an all to common occurrence, so a set of AP Racing 6 pots with 330mm rotors were fitted to resolve this problem.


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standard brakes

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a little bigger and fit nicely inside the 17’s

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Attachments

Last edited:

Essbon

Impreza WRX Type R STI Version 5
2012, the SC46 turbo was swapped for a SC38, Apexi Power FC and commander swapped for an Alcatek ECU including Anti-lag and Launch Control. an STI 8 TMIC was fitted, as this is bigger than the OEM item.

The smaller SC38 turbo is superb on the 2.5. It spools early down the rev range, and combines with the torque from the EJ257, resulted in a very fast road car.

Power 363 BHP 382 FtLbs


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My next focus was looking at the handling and some Rear STI trailing arms and lateral links or ‘Pink Bits’ as I like to call them were ordered from Japan.


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2013 first mod of the year was changing the exhaust system. I must be getting old and I no longer wanted a loud noisy exhaust, but something subtle, have the JDM feel and look and quiet enough for track days. After many weeks of hunting and searching, I finally made my mind up. A Fujitsubo RM-01 was needed. second hand units were hard to come by which were in good condition, and that were not Jap style and angled up. I contacted japanparts.com who informed me this exhaust is no longer available for my model. However, they contacted Fujitsubo who very kindly made one to order for me. Result.

One slight problem, this exhaust is a once price from down pipe back, so picking this up from FedEx was interesting


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Next focus, handing.. The car was subjected to a track day had great fun, but the handling was not great and the Hot Bits DT1 coil overs (fitted a few years back) were not really up to scratch.

So new rubber went on, a set of Yokohama Advan Neova AD08’s, Bilstien B16’s custom modified by Bilstien to my tuners specification (www.chevronmotorsport.com), 24mm front and rear Whiteline roll bars, STI new age front alloy arms fitted and machined for more caster, Whiteline top mounts and STI group N rear top mounts, SuperPro bushes

Not cheap set of mods, but totally worth it and completely transformed the car, and gave me more confidence to push the car harder on track days…


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2014 - Back end of 2013, the broke the standard 5 speed gearbox after my second track day, it was time to source a better and stronger box, which could handle track day abuse, launching etc…

Late in 2013, I stumbles upon a complete 5 speed PPG straight cut gearbox with a Kazz plated front diff, going cheap. after a few months, I was not getting on with the box Specially the diff, and missed the close ratios of the standard JDM 5 speed box. PPG was sold and in went a JDM 6 Speed from a version 8 STI with matching rear diff. At the same time the box went in a few perrin goodies were added to improve the 6 speed shift response, new Exedy Pink Box clutch, lightweight flywheel and crank pulley.


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This pretty much brings us up to date. There are a few more mods in the pipeline, there is always something to change and upgrade.


Below you will find the most recent pictures of my car after a full detail and a full modifications list.


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Essbon

Impreza WRX Type R STI Version 5
Full Modification List

Engine


EJ257 Short Block
Version 5 Heads
Mahl Power Pack Pistons
Scoobyclinic Turbo Up Pipe
NGK BKR7EIX Spark Plugs
Zero/Sports 1.3 Bar Radiator Cap
740cc Injectors
SC38 Billet Turbo
Perrin Turbo Blanket Black
STI version 8 Top Mount Intercooler
Carl Davey Bonney Under Tray
Scoobyclinic Silicon Turbo Inlet Hose 56mm Red
K&N 57i Induction Kit
Alcatek E1S99 ECU with L/C and A/L
Zero/Sports Radiator Cover
Scoobyclinic Front Mounted Oil Cooler
Fujitsubo RM-01A Full Decat Twin Resonator Exhaust
GFB Recirculating Dump Valve
Hydraulic Carbon Fibre Bonnet Lifters
Walbro Uprated Fuel Pump

Drivetrain

SCR 6 Speed lightweight Flywheel 6.7Kg
Exedy 240mm Pink Box Clutch Kit, Anti Judder & Pressure Plate.
JDM STI 6 speed DCCD gearbox
Perrin 6 Speed Short Shift Adapter
Perrin Shifter Bushing Kit
Perrin Rear Shifter Bush
Perrin Lightweight Crank Pulley Black
Perrin Pitch Stop Mount Black
Perrin R180 Rear Diff Cover Black
SuperPro Rear Differential Support Bracket Mount Bush Kit

Suspension

Bilstein B16 Suspension (customer Modified)
Whiteline KCA335 Front Top Mounts
Whiteline front and rear adjustable drop links
STI Group N Rear Top Mounts
Whiteline Anti Lift Kit
STI New Age Front Alloy Wishbones machined for more camber and caster
SuperPro Bush Kit
Chevron Motorsport Bump Steer Control Arms
Whiteline 24mm Rear Anti-roll Bar
Whiteline 24mm Front Anti-roll Bar
Whiteline Front Lower Strut Brace
STI Pink Lateral Link Set (Full Pillow)
STI Pink Rear Trailing Arms

Wheels / Tires

Rota Grid 17x7.5” ET48 5x100 PCD Bronze
Yokohama Advan Neova AD08 Tyre 215/40/17 83W

Brakes

AP Racing 6 Pot Brakes
330mm rotors
Ferodo DS2500 pads
Goodridge braided hoses
AP Dot5.1 brake fluid

Interior

Zero/Sports 60mm Gauge Pod
Defi 60mm Gauges (Boost, Oil Pressure, Oil Temperature)
Defi Control Unit
Pioneer AVH-P2400BT Double Din Head Unit
Perrin Fat Billet Aluminium Shift Knob Matt Black
STI Aluminium Pedal Set
STI Stainless Steel Side Sill Entry Guards
STI 8 Steering wheel

Exterior

Impreza Version 6 Front Lip
STI Bonnet Vents (OEM)
STI Limited Roof Vent

Gearbox Ratios

TY856WB4KA code
3.636
2.375
1.761
1.346
1.062
0.842
3.900
DCCD (35:65)
A.P. Suretrac automatic DCCD system
 

Carboy

Well-Known Member
Very nice specked Type-R and I like your attention to detail. :thumb Your new exhaust I really like, is it a 3" system?
 

Essbon

Impreza WRX Type R STI Version 5

Essbon

Impreza WRX Type R STI Version 5
Time for a little update to this thread and provide a little teaser of whats to come....

So today, I popped up SCR (www.scoobyclinic.com) and finalised the next set of mods and gave Kev the thumbs up to proceed

to name a few
Syvecs S6
FMIC
Various fuelling upgrades
SC42+ Turbo
plus much more.......

I'm not chasing a power figure or number, IMO its how it drives and handles
I'll update this thread as things develop over the winter months
 

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