Description
Description:
The Active Autowerke AFlow catted downpipe for the BMW M340i G20 and M440i G22 2025+ delivers a measurable improvement in exhaust flow and turbo response while remaining fully OBD2 compliant with no check engine light.
The Active AFlow high flow catalyst uses advanced substrate technology to maximize flow while keeping emissions within OBD2 thresholds. Paired with 304 stainless steel mandrel-bent piping, this is a bolt-on upgrade that improves throttle response, reduces turbo lag, and adds a more aggressive exhaust note — all without triggering a CEL. Made by Active Autowerke in Miami, Florida.
Features:
- Active AFlow high flow catalytic converter
- OBD2 compliant — no check engine light (CEL)
- 304 stainless steel mandrel-bent construction
- Bolt-on fitment
- Made by Active Autowerke in Miami, Florida
Vehicle Fitment:
| MAKE | MODEL | CHASSIS | YEAR | ENGINE |
| BMW | M340i | G20 | 2025+ | B58N |
| BMW | M440i | G22 | 2025+ | B58N |
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