The 2004 Subaru Impreza WRX STI is a modern rally car in Forza Horizon 6. Find this car upgrade part, tune guide, and tune code for rally racing down below.
The 2004 STI model comes in B class with 552 PI with AWD and front engine. With 48 PI available for us, we put rally tires on it and improved the handling with more stability for all dirt roads.
Table of Contents
04’ Subaru Impreza Upgrade List
Tires and Rims
- Tire Compound: Rally
Drivetrain
- Driveline: Street
- Differential: Rally
Platform and Handling
- Brakes: Race
- Spring: Rally
- Anti-roll Bars: Race
Engine
- Intercooler: Sport
04’ Subaru Impreza Tune List
Tire Pressure
- Front: 28.5 PSI
- Rear: 28.5 PSI
Alignment
- Camber: Front: -1.5° | Rear: -1.0°
- Toe: Front: 0.1° Out | Rear: 0.0°
- Front Caster Angle: 6.0°
Angling the tires slightly inward at the top (camber) keeps them flat on the ground during turns. A tiny bit of front toe-out helps the car start turning faster.
Antiroll Bars
- Front: 15.00
- Rear: 18.00
We make these relatively soft. This allows the left and right sides of the car to move independently, keeping the tires on the ground when driving over uneven dirt.
Springs & Ride Height
- Springs: Front: 280.0 LB/IN | Rear: 251.6 LB/IN
- Ride Height: Front: 8.3 IN | Rear: 8.3 IN
We raise the car as high as possible so it doesn't smash its underside on the ground. Soft springs help absorb the shock from big jumps.
Damping
- Rebound Stiffness: Front: 6.0 | Rear: 5.0
- Bump Stiffness: Front: 2.0 | Rear: 1.5
Damping stops the car from bouncing. These settings help the suspension stretch out quickly after a bump but compress smoothly when landing.
Brake
- Braking Force Balance: 48%
- Braking Force Pressure: 100%
Sending slightly more braking power to the back wheels helps the car swing its rear end around tight corners when you step on the brakes.
Differential
- Front: Acceleration: 30% | Deceleration: 0%
- Rear: Acceleration: 70% | Deceleration: 10%
- Center Balance: 65%
This sends 65% of the engine's power to the back wheels. It gives you the slidey feel of a rear-wheel-drive car while the front wheels still pull you 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: 3,270 lb > 3,216 lb
- Peak Power: 278 hp > 283 hp
- PWR: 0.08 hp/lb > 0.09 hp/lb
- Lateral Gs: 1.3 > 1.5
- Performance Class: B 552 > B 600
Overall, we built this car to fit its only purpose, which is stability on dirt roads at high speed without the fear of spinning out accidentally.
End of Guide.
