Free up exhaust flow directly behind the turbo with this catted downpipe from EOS Exhaust. It fits several Honda and Acura 1.5T applications and uses a 400-cell GESI G-Sport catalytic converter for better flow while keeping a catalytic converter in place.
This listing is for the catted downpipe only. It does not include the front pipe found in the other EOS package. The downpipe connects to the factory front pipe or most aftermarket front pipes without an additional adapter.
Fitment Information
- 2018, 2019, 2020, 2021, 2022 Honda Accord 1.5T - 10th Gen CV1
- 2023, 2024, 2025, 2026 Honda Accord 1.5T - 11th Gen CY1
- 2022, 2023, 2024, 2025, 2026 Honda Civic 1.5T - 11th Gen FE / FL
- 2023, 2024, 2025, 2026 Acura Integra 1.5T - 5th Gen DE4
1.5L turbocharged models only. Select the correct Honda Civic, Honda Accord or Acura Integra variant when ordering.
This does not fit the Honda Civic Type R, Acura Integra Type S, Accord 2.0T or hybrid models.
400-Cell GESI Catalytic Converter
The downpipe uses a 4.5-inch outer diameter, 400 CPSI GESI G-Sport catalytic converter rated for applications making up to 850 horsepower. The 4.5-inch measurement refers to the outside diameter of the catalytic converter, not the exhaust pipe diameter.
EOS advertises this downpipe as requiring no ECU tune and being designed not to trigger a check engine light. Actual check engine light operation can depend on the vehicle, ECU calibration and condition of the emissions system.
Features
- Downpipe-only configuration
- 400-cell GESI G-Sport catalytic converter
- Catalytic converter rated for applications up to 850 horsepower
- T-304 stainless steel construction
- Brushed silver finish
- Smooth cast inlet and outlet sections
- Designed to improve exhaust flow and reduce restriction
- Connects to the factory or most aftermarket front pipes
- No front-pipe adapter required
- No ECU calibration or tune required according to EOS
- Gaskets and stainless steel installation hardware included
Emissions Information
This downpipe includes a 400-cell GESI G-Sport catalytic converter advertised as EPA compliant. This does not mean the complete downpipe assembly is CARB exempt or approved for every vehicle and jurisdiction.
EOS does not provide a CARB Executive Order number for this downpipe, and the product cannot be shipped to California. Check your state and local emissions requirements before installation.
What's Included
- EOS catted downpipe
- 400-cell GESI G-Sport catalytic converter
- Required gaskets
- Stainless steel installation hardware
The front pipe is not included.
Before You Buy
- Choose the correct Civic, Accord or Integra variant when ordering.
- Do not coat, heat wrap or otherwise insulate the downpipe or catalytic converter. EOS states that heat-related damage caused by insulation is not covered under warranty.
- Professional installation is recommended.
Pairs Well With
- PRL 3-Inch Front Pipe for Honda Civic, Acura Integra and Accord 1.5T - Continue the exhaust upgrade after the EOS downpipe with a larger front pipe for the newer Civic, Integra and Accord platforms.
- PLM 3-Inch Front Pipe for Honda Accord 1.5T (18-22) - A stainless front-pipe upgrade for 10th Gen Accord owners who want to replace the next restrictive section of the exhaust.
- EOS Cat-Back Exhaust for Honda Civic FE / FL and Acura Integra DE4 - Pair the catted downpipe with an EOS cat-back for a more complete exhaust setup and a stronger exhaust note.
- Rev9 Cat-Back Exhaust for Honda Accord Turbo (18-22) - A matching cat-back option for 10th Gen Accord owners looking for more sound and improved exhaust flow behind the downpipe.
About EOS Exhaust
EOS Exhaust is part of Extreme Online Store and offers stainless steel exhaust upgrades for popular import, domestic and European platforms. Its lineup includes axle-back systems, cat-back exhausts, mid-pipes, front pipes and downpipes designed as direct-fit replacements for factory exhaust components.

More in this category
Acura Integra Parts
Honda Accord Parts
Honda Civic Parts
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