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Active Autowerke AFlow Catted Downpipe BMW B58 Gen 2
Active Autowerke's AFlow catted downpipe for the BMW B58 Gen 2 engine replaces the factory downpipe with a high-flow design that includes a GESI catalytic converter. It is built as a direct-fit component for B58 Gen 2 applications, so it installs in the factory downpipe location without custom fabrication.
The GESI catalytic converter keeps the exhaust stream emissions-compliant while the larger, smoother internal path reduces backpressure compared with the stock unit. This lets the turbo spool more freely and supports higher power output on tuned or stock B58 Gen 2 cars, with the exhaust note becoming deeper and more pronounced under load.
Key Features
| Brand | Active Autowerke |
| Product Type | Catted Downpipe |
| Model | AFlow |
| Engine Compatibility | BMW B58 Gen 2 |
| Catalytic Converter | GESI |
| Material | Stainless Steel |
| Fitment Type | Direct Fit |
| Installation Location | Factory Downpipe Location |
Highlights
- GESI catalytic converter included
- Direct fit in the factory downpipe location
- Stainless steel construction
- Designed for BMW B58 Gen 2 engines
Compatibility
Designed for BMW vehicles equipped with the B58 Gen 2 engine.
Frequently asked questions
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