Bodywork Body conversion with all galvanished plate, custom wide body, racing gas tank cover, head lamp angle eyes, Peugeot 406 front wiper, brakes lamp Honda New City, Sparco safety bonnet pin.
Wheel & Suspension Velg Brabus Monoblock, SBM Lowering Springs (front&rear), strut bar Interior: Acura Integra DC5 front seats covered with MB Tech, Fully painted interior to match the seats, Isotta steering wheel. Momo shift knob, Momo hand brake cover. Momo pedals, Auto Gauge tachometer, oil pressure, volt meter. Vacum ICE Head unit Pioneer DEH-P6850MP, 2 pc SoundStream Picasso 480 4ch, 2pc Braxton.
Monoblock SX800 D, 4 pc subwoofer Orion 12 D2, speaker split MB Quart Discus, 2 pc speaker Coaxial Cubig 2.1 , 2 pc capsitorbank Mass Engineering @ 1.1F, Playstation 2 with wireless joystick, custom fiber installation. ASL 12" LCD monitor, secondary battery NX 120 100. Stinger cables.
The Subaru Impreza WRX and Subaru Impreza WRX STi have a huge following around the world, and because of this, a huge network of part suppliers who offer everything from simple blow off valve upgrades to complete new performance tuned engines.
Due to the Subaru Rally Pedigree, and the nature of its turbo charged engine, the Subaru WRX and Subaru STi are both bought by keen rally and performance enthusiasts, and its rare that a Subaru Impreza is bought and left standard for very long.
Thanks to the many performance modifications available, Subaru Impreza's tend to be modified in one form or another, and although modifications are made styling wise, its normally whats under the bonnet/hood that marks a Subaru out as being something special.
One of the most common performance enhancing modification is the replacement of the OEM exhaust with an aftermarket one, such as the Blitz Nur Spec, Hayward and Scott, HKS Super Drager or Scoobyworld Afterburner. The exhaust modifications, whether a simple replacement backbox, or a complete turbo back replacement, including the loss of the catalytic convertors, normally sees an increase in performance of the Subaru, and an increase in sound level. Some of the exhausts can be very loud indeed, and contravene regulations on many race circuits around the UK.
Along with exhaust modifications, uprated air filters or replacement induction kits are used to aid airflow into the engine. Again, this simple modification can increase both noise level and performance of the Subaru Impreza, although owners of the Subaru Impreza Classic need to be aware that replacing the air filter can affect the MAF sensor, leading to engine problems.
Other modifications to increase performance include replacing the top mount intercooler with a front mounted one, which allows for increases in performance in other areas by ensuring that temperatures do not get to high. The trade off with increasing performance is extra heat and increased fuel costs. A front mounted intercooler can at least reduce the heat element.
To increase performance after this point involves either remapping the current ECU or replacing the ECU with an aftermarket one. Normally at this point the fuel pump would be uprated to ensure it can supply enough fuel to avoid potentially harmful detonation. Remapping is normally done using a laptop and appropriate software, by an experienced technician. With the popularity of rolling roads, remapping can now be done safely without the need for mapping on the road.
Once the Subaru tuner has reached this level, more performance is normally achieved by changing the turbo for a larger custom version, increasing engine displacement, and more aggressive mapping of the ECU.
As well as engine modifications, performance can be increased by uprating the suspension, brakes and tyres, leading to better handling and stopping ability. Companies such as tein, eibach, tarox, and brembo, all produce products to help in these areas.
