The 2005 Subaru Impreza WRX STI is a modern rally car in Forza Horizon 6. Find this car upgrade part, tune guide, and tune code down below.
The 05’ model comes in B class with 570 PI which only leaves us 30 PI to upgrade the car, it’s also an AWD front engine car so if we add dirt tire it will jump to Class A, and our build is only focused on its own class rally racing.
Table of Contents
05’ Subaru Impreza Upgrade List
Body Kits and Conversion
- Engine Swap: 2.0L F4 - Turbo Rally
Drivetrain
- Clutch: Race
- Driveline: Sport
- Differential: Rally
Platform and Handling
- Brakes: Race
- Spring: Rally
- Anti-roll Bars: Race
Engine
- Flywheel: Race
05’ Subaru Impreza Tune List
Tires
- Front: 28.5 PSI
- Rear: 28.5 PSI
Lower tire pressure makes the tires softer. This gives them a better grip on the loose dirt.
Alignment
- Camber Front: -1.5°
- Camber Rear: -1.0°
- Toe Front: 0.1° Out
- Toe Rear: 0.0°
- Front Caster Angle: 6.5°
Tilting the wheels inward slightly helps the tires push into the dirt when turning. A tiny bit of front toe-out makes the steering feel much sharper.
Antiroll Bars
- Front: 12.00
- Rear: 18.00
Keeping them on the softer side lets the left and right wheels move up and down on their own over bumpy dirt roads.
Springs
- Front Springs: 220.0 LB/IN
- Rear Springs: 190.0 LB/IN
- Ride Height Front: 9.1 IN
- Ride Height Rear: 9.1 IN
Keeping the car as high as possible stops the bottom of the car from smashing into rocks and bumps.
Damping
- Rebound Stiffness Front: 6.5
- Rebound Stiffness Rear: 5.5
- Bump Stiffness Front: 1.8
- Bump Stiffness Rear: 1.4
Damping controls how fast the springs bounce. We set this to be soft so the car doesn't bounce hard after hitting a bump.
Brakes
- Braking Force Balance: 45% (Rear-biased)
- Braking Force Pressure: 100%
Sending slightly more braking power to the back wheels helps tap the rear end out, making it easier to slide around sharp dirt corners.
Differential
- Front Acceleration: 30%
- Front Deceleration: 0%
- Rear Acceleration: 80%
- Rear Deceleration: 10%
- Center Balance: 65%
Sending more power to the back wheels (65%) makes the car slide nicely, while the front wheels still help pull you forward out of corners.
04’ Subaru Impreza Tune Code
If you like our tune and want our exact build, put this code in: Tune Browser > Search > Share Code > and input our share code.
- Weight: 3,315 lb > 3,217 lb
- Peak Power: 311 hp > 336 hp
- PWR: 0.09 hp/lb > 0.10 hp/lb
- Lateral Gs: 1.3 > 1.4
- Performance Class: B 570 > B 600
Overall, we couldn’t afford to put on a dirt tire on this build but we have swapped an engine for a better rally control car and improved stability and handling for better turning for hairpins.
End of Guide.
