The Invidia cat-back exhaust systems for the Toyota GR Corolla are designed to improve exhaust flow, refine turbo response, and change the vehicle’s sound character while maintaining high build quality and precise fitment.
Invidia offers two distinct exhaust configurations for the GR Corolla platform: the Q300 and the R400. Both systems share a high-flow exhaust architecture and premium stainless steel construction, but they are tuned to deliver different sound levels and visual styling. This allows GR Corolla owners to choose an exhaust system that matches their driving style, whether the goal is subtle refinement or a more aggressive performance tone.
Both Invidia exhaust systems are engineered with performance and durability in mind:
3.0-inch (76 mm) mandrel-bent exhaust piping
High-flow cat-back design to reduce backpressure
TIG-welded stainless steel construction
Direct bolt-on installation using factory mounting points
Designed specifically for the GR Corolla AWD turbo platform
By reducing exhaust restriction, these systems help improve turbo efficiency, throttle response, and overall driving feedback.
The Q300 system is tuned for drivers who want improved sound and performance without excessive volume.
Key characteristics:
Quieter and more refined tone
Smooth, deep exhaust note without harshness
Stainless steel exhaust tips
Well suited for daily driving and long highway use
The Q300 is ideal for GR Corolla owners who want a noticeable upgrade from stock while keeping cabin noise at a comfortable level.
The R400 system is designed for a more expressive and performance-focused sound.
Key characteristics:
Louder and more aggressive tone than Q300
Stronger turbo and exhaust presence under acceleration
Burnt titanium exhaust tips for a motorsport-inspired appearance
Suited for enthusiasts who want a more pronounced exhaust character
The R400 delivers a more dynamic sound profile and visual style compared to the Q300.
While cat-back exhaust systems do not dramatically increase horsepower on their own, they play an important role in improving airflow in turbocharged vehicles.
Benefits include:
Reduced exhaust restriction
Improved turbo spool characteristics
Enhanced throttle response
More engaging exhaust sound
When combined with supporting modifications such as downpipes, intercoolers, and tuning, these exhaust systems help support higher power levels and overall performance potential.
Toyota GR Corolla (2023+)
Engine: 1.6L Turbo G16E-GTS
AWD drivetrain
Both exhaust systems are engineered as direct bolt-on upgrades with OEM-style fitment.
The difference between the two systems comes down to sound preference and styling:
Choose the Q300 if you want a refined, daily-drivable exhaust with moderate sound levels.
Choose the R400 if you want a louder, more aggressive exhaust tone and titanium tip styling.
Both systems offer improved flow and premium construction—the choice is about how you want your GR Corolla to sound and look.
Is there a difference in performance between the Q300 and R400?
Both systems use similar piping architecture, so performance gains are comparable. The primary differences are sound level and exhaust tip design.
Which exhaust is louder?
The R400 is noticeably louder and more aggressive, while the Q300 is quieter and more refined.
Will either system cause drone on the highway?
The Q300 is designed to minimize cabin drone. The R400 may produce more noticeable sound under certain driving conditions, especially with other exhaust modifications.
Do these exhaust systems require tuning?
No tuning is required for a cat-back exhaust alone, but tuning can further optimize performance when paired with other modifications.
Are these exhausts compatible with aftermarket downpipes?
Yes. Both systems are designed to work with stock and most aftermarket downpipes.
Are they street legal?
Sound regulations vary by location. Always check local laws regarding exhaust modifications.
The Invidia cat-back exhaust systems for the Toyota GR Corolla are designed to improve exhaust flow, refine turbo response, and change the vehicle’s sound character while maintaining high build quality and precise fitment.
Invidia offers two distinct exhaust configurations for the GR Corolla platform: the Q300 and the R400. Both systems share a high-flow exhaust architecture and premium stainless steel construction, but they are tuned to deliver different sound levels and visual styling. This allows GR Corolla owners to choose an exhaust system that matches their driving style, whether the goal is subtle refinement or a more aggressive performance tone.
Both Invidia exhaust systems are engineered with performance and durability in mind:
3.0-inch (76 mm) mandrel-bent exhaust piping
High-flow cat-back design to reduce backpressure
TIG-welded stainless steel construction
Direct bolt-on installation using factory mounting points
Designed specifically for the GR Corolla AWD turbo platform
By reducing exhaust restriction, these systems help improve turbo efficiency, throttle response, and overall driving feedback.
The Q300 system is tuned for drivers who want improved sound and performance without excessive volume.
Key characteristics:
Quieter and more refined tone
Smooth, deep exhaust note without harshness
Stainless steel exhaust tips
Well suited for daily driving and long highway use
The Q300 is ideal for GR Corolla owners who want a noticeable upgrade from stock while keeping cabin noise at a comfortable level.
The R400 system is designed for a more expressive and performance-focused sound.
Key characteristics:
Louder and more aggressive tone than Q300
Stronger turbo and exhaust presence under acceleration
Burnt titanium exhaust tips for a motorsport-inspired appearance
Suited for enthusiasts who want a more pronounced exhaust character
The R400 delivers a more dynamic sound profile and visual style compared to the Q300.
While cat-back exhaust systems do not dramatically increase horsepower on their own, they play an important role in improving airflow in turbocharged vehicles.
Benefits include:
Reduced exhaust restriction
Improved turbo spool characteristics
Enhanced throttle response
More engaging exhaust sound
When combined with supporting modifications such as downpipes, intercoolers, and tuning, these exhaust systems help support higher power levels and overall performance potential.
Toyota GR Corolla (2023+)
Engine: 1.6L Turbo G16E-GTS
AWD drivetrain
Both exhaust systems are engineered as direct bolt-on upgrades with OEM-style fitment.
The difference between the two systems comes down to sound preference and styling:
Choose the Q300 if you want a refined, daily-drivable exhaust with moderate sound levels.
Choose the R400 if you want a louder, more aggressive exhaust tone and titanium tip styling.
Both systems offer improved flow and premium construction—the choice is about how you want your GR Corolla to sound and look.
Is there a difference in performance between the Q300 and R400?
Both systems use similar piping architecture, so performance gains are comparable. The primary differences are sound level and exhaust tip design.
Which exhaust is louder?
The R400 is noticeably louder and more aggressive, while the Q300 is quieter and more refined.
Will either system cause drone on the highway?
The Q300 is designed to minimize cabin drone. The R400 may produce more noticeable sound under certain driving conditions, especially with other exhaust modifications.
Do these exhaust systems require tuning?
No tuning is required for a cat-back exhaust alone, but tuning can further optimize performance when paired with other modifications.
Are these exhausts compatible with aftermarket downpipes?
Yes. Both systems are designed to work with stock and most aftermarket downpipes.
Are they street legal?
Sound regulations vary by location. Always check local laws regarding exhaust modifications.
