Active Autowerke AFlow Catted Downpipe - B58N G20/G22 M340/M440i
Active Autowerke brings professional-grade emissions technology to the 2025+ BMW G-Chassis with the AFlow Catted Downpipe. This system utilizes the advanced Active AFlow Super High Output Catalytic Converter, which is EPA registered and 49-state legal. By employing an ultra-high-flow 400 Cell Per Square Inch (CPSI) substrate, this downpipe provides the flow characteristics of a race-pipe while maintaining full OBD2 compliance. The catalyst is designed to reach operational efficiency within just 9 seconds of startup, ensuring that emissions standards are met quickly. This is the premier choice for enthusiasts seeking a refined exhaust note and increased power without the raw fuel smell or environmental concerns of a catless system.
Key Features:
Active AFlow 400 CPSI Catalyst: High-density 304 stainless steel substrate furnace-brazed to the mantle for extreme durability under high boost.
Rapid Light-Off Time: Achieves operational efficiency within approximately 9 seconds of engine start.
Forced Induction Optimized: Specifically rated to handle high-boost applications with zero loss in horsepower.
Thermal Management: Engineered to withstand internal exhaust gas temperatures (EGTs) up to 1500�F.
Environmentally Conscious: Effectively reduces harmful emissions and noise, protecting both passengers and the ecosystem.
Specifications:
Vehicle Fitment: 2025+ BMW M340i and M440i (G20/G22 Chassis).
Catalyst Cell Density: 400 Cells Per Square Inch (CPSI).
Catalyst Substrate: Full 304 Stainless Steel.
Warranty: 5-Year/50,000-Mile on shell/ends; 2-Year/25,000-Mile on the catalytic core (Voided by "excessive burble" tunes).
Compliance: EPA Registered / 49-State Legal (Not CARB registered for California).
Active Autowerke AFlow Catted Downpipe - B58N G20/G22 M340/M440i
$1899.00
Product Details
Active Autowerke brings professional-grade emissions technology to the 2025+ BMW G-Chassis with the AFlow Catted Downpipe. This system utilizes the advanced Active AFlow Super High Output Catalytic Converter, which is EPA registered and 49-state legal. By employing an ultra-high-flow 400 Cell Per Square Inch (CPSI) substrate, this downpipe provides the flow characteristics of a race-pipe while maintaining full OBD2 compliance. The catalyst is designed to reach operational efficiency within just 9 seconds of startup, ensuring that emissions standards are met quickly. This is the premier choice for enthusiasts seeking a refined exhaust note and increased power without the raw fuel smell or environmental concerns of a catless system.
Key Features:
Active AFlow 400 CPSI Catalyst: High-density 304 stainless steel substrate furnace-brazed to the mantle for extreme durability under high boost.
Rapid Light-Off Time: Achieves operational efficiency within approximately 9 seconds of engine start.
Forced Induction Optimized: Specifically rated to handle high-boost applications with zero loss in horsepower.
Thermal Management: Engineered to withstand internal exhaust gas temperatures (EGTs) up to 1500°F.
Environmentally Conscious: Effectively reduces harmful emissions and noise, protecting both passengers and the ecosystem.
Specifications:
Vehicle Fitment: 2025+ BMW M340i and M440i (G20/G22 Chassis).
Catalyst Cell Density: 400 Cells Per Square Inch (CPSI).
Catalyst Substrate: Full 304 Stainless Steel.
Warranty: 5-Year/50,000-Mile on shell/ends; 2-Year/25,000-Mile on the catalytic core (Voided by "excessive burble" tunes).
This product is not eligible for Lifetime Replacement
Fits These Cars
MAKE
MODEL
SUBMODEL
ENGINE
Special Fitment Notes
BMW
G20
M340i
B58 3.0L
Use vehicle selector to confirm fitment
BMW
G20
M340i xDrive
B58 3.0L
Use vehicle selector to confirm fitment
BMW
G22
M440i
B58 3.0L
Use vehicle selector to confirm fitment
BMW
G22
M440i xDrive
B58 3.0L
Use vehicle selector to confirm fitment
*The above product applications have been written by Turner Motorsport. All
warranties, product application, fitment, and performance are the responsibility of Turner Motorsport.
For additional information see the terms of use.
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