The Grocery Getter Performance GR Corolla Downpipe is a high-flow performance upgrade engineered to improve exhaust flow, increase horsepower, and enhance turbo response on the Toyota GR Corolla. Designed specifically for the G16E-GTS turbocharged engine, this downpipe replaces the restrictive factory catalytic converter and exhaust piping with a larger-diameter, free-flowing design.
By reducing backpressure and improving exhaust velocity, the GGP downpipe allows the turbocharger to spool faster and operate more efficiently, resulting in noticeable gains in power, throttle response, and overall driving performance.
Available in both high-flow catted and catless configurations, this downpipe offers flexibility for street-focused builds or track-focused performance setups.
Upgrading the downpipe is one of the most effective performance modifications for turbocharged vehicles. On the GR Corolla, a performance downpipe can deliver:
Increased horsepower and torque
Faster turbo spool and improved throttle response
Reduced exhaust backpressure
Improved exhaust flow and sound
Enhanced performance potential for tuning
On turbocharged platforms, aftermarket downpipes commonly provide measurable horsepower gains, especially when paired with tuning and supporting modifications.
Best for:
Street-driven GR Corollas
Reduced exhaust odor and emissions impact
Balanced performance and drivability
Benefits:
Improved flow over stock
Better emissions control compared to catless
Reduced chance of exhaust smell
Best for:
Track-focused builds
Maximum performance potential
Off-road use only
Benefits:
Maximum exhaust flow
Highest horsepower potential
Aggressive exhaust tone
Note: Catless downpipes are intended for off-road or motorsport use only and may not be legal for street use depending on local regulations.
The GGP GR Corolla downpipe is built using premium materials and precision manufacturing processes:
4″ to 3″ diameter design for optimal flow
304 stainless steel construction
CNC-machined flanges for precise fitment
Integrated flex section to reduce stress and vibration
TIG-welded construction for durability
Direct bolt-on compatibility with stock and aftermarket exhaust systems
This design ensures long-term reliability under high heat and boost conditions while maintaining OEM-like fitment.
Toyota GR Corolla (2023+)
Engine: 1.6L Turbo G16E-GTS
Compatible with stock and aftermarket cat-back exhaust systems
Many aftermarket downpipes prioritize price or performance—but rarely both. The Grocery Getter Performance downpipe is engineered to deliver:
Performance comparable to premium brands
High-quality materials and construction
Flexible catted or catless options
Exceptional value compared to competing GR Corolla downpipes
While many GR Corolla downpipes retail between $900 and $1800, the GGP downpipe delivers high-performance engineering at a significantly more accessible price point.
Will this downpipe increase horsepower?
Yes. By reducing exhaust restriction and improving turbo efficiency, the downpipe can contribute to noticeable horsepower and torque gains, especially when combined with tuning and supporting modifications.
Will this cause a check engine light?
Depending on configuration and tuning, a CEL may occur, particularly with catless setups.
Is tuning required?
Tuning is recommended to fully optimize performance gains and engine safety.
Does this downpipe fit aftermarket exhaust systems?
Yes. It is designed to bolt up to both OEM and aftermarket cat-back systems.
Is this product street legal?
High-flow catted versions may be suitable for street use depending on local regulations. Catless versions are intended for off-road use only.
The Grocery Getter Performance GR Corolla Downpipe is a high-flow performance upgrade engineered to improve exhaust flow, increase horsepower, and enhance turbo response on the Toyota GR Corolla. Designed specifically for the G16E-GTS turbocharged engine, this downpipe replaces the restrictive factory catalytic converter and exhaust piping with a larger-diameter, free-flowing design.
By reducing backpressure and improving exhaust velocity, the GGP downpipe allows the turbocharger to spool faster and operate more efficiently, resulting in noticeable gains in power, throttle response, and overall driving performance.
Available in both high-flow catted and catless configurations, this downpipe offers flexibility for street-focused builds or track-focused performance setups.
Upgrading the downpipe is one of the most effective performance modifications for turbocharged vehicles. On the GR Corolla, a performance downpipe can deliver:
Increased horsepower and torque
Faster turbo spool and improved throttle response
Reduced exhaust backpressure
Improved exhaust flow and sound
Enhanced performance potential for tuning
On turbocharged platforms, aftermarket downpipes commonly provide measurable horsepower gains, especially when paired with tuning and supporting modifications.
Best for:
Street-driven GR Corollas
Reduced exhaust odor and emissions impact
Balanced performance and drivability
Benefits:
Improved flow over stock
Better emissions control compared to catless
Reduced chance of exhaust smell
Best for:
Track-focused builds
Maximum performance potential
Off-road use only
Benefits:
Maximum exhaust flow
Highest horsepower potential
Aggressive exhaust tone
Note: Catless downpipes are intended for off-road or motorsport use only and may not be legal for street use depending on local regulations.
The GGP GR Corolla downpipe is built using premium materials and precision manufacturing processes:
4″ to 3″ diameter design for optimal flow
304 stainless steel construction
CNC-machined flanges for precise fitment
Integrated flex section to reduce stress and vibration
TIG-welded construction for durability
Direct bolt-on compatibility with stock and aftermarket exhaust systems
This design ensures long-term reliability under high heat and boost conditions while maintaining OEM-like fitment.
Toyota GR Corolla (2023+)
Engine: 1.6L Turbo G16E-GTS
Compatible with stock and aftermarket cat-back exhaust systems
Many aftermarket downpipes prioritize price or performance—but rarely both. The Grocery Getter Performance downpipe is engineered to deliver:
Performance comparable to premium brands
High-quality materials and construction
Flexible catted or catless options
Exceptional value compared to competing GR Corolla downpipes
While many GR Corolla downpipes retail between $900 and $1800, the GGP downpipe delivers high-performance engineering at a significantly more accessible price point.
Will this downpipe increase horsepower?
Yes. By reducing exhaust restriction and improving turbo efficiency, the downpipe can contribute to noticeable horsepower and torque gains, especially when combined with tuning and supporting modifications.
Will this cause a check engine light?
Depending on configuration and tuning, a CEL may occur, particularly with catless setups.
Is tuning required?
Tuning is recommended to fully optimize performance gains and engine safety.
Does this downpipe fit aftermarket exhaust systems?
Yes. It is designed to bolt up to both OEM and aftermarket cat-back systems.
Is this product street legal?
High-flow catted versions may be suitable for street use depending on local regulations. Catless versions are intended for off-road use only.
