Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Exhaust› Headers, Manifolds and Components
Active
Performance Exhaust Header
SKU: 11-022
Moderate — 2–4 hours
Overview
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Vehicle Symptoms
- Lack of power at high RPM
- Engine feels restricted on acceleration
- Poor exhaust tone from under hood
- Check engine light due to failed catalytic converter
- Throttle response feels sluggish
Diagnostic Codes
- P0420 – Cat Sys Efficiency Below Threshold (B1)
- P0430 – Cat Sys Efficiency Below Threshold (B2)
Relevant Conversations
- BMW N52 exhaust header upgrade vs stock manifold
- Active Autowerke N51/N52 header review
- P0420 fix for E90 328i with N52
- Best performance header for N52 engine
- How to install N52 exhaust header at home
- AA header vs AFE header N52 comparison
- N52 header dyno gains real world results
- Will aftermarket header cause check engine light?
- Exhaust manifold replacement N51 E90 forum
- Co-purchase: N52 header with tune and intake
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Active |
| Part Number | 11-022 |
| Category | Exhaust |
Videos
Active Autowerke Gen 2 Signature Exhaust for E90 BMW 328i N52 Quick Review and Sound Clips
Active Autowerke- Tune+Full Bolt On 328 N52 Dyno
Is this the best-sounding N52 exhaust? | aFe Power Cat Back w/ Active Autowerke Headers
BMW 128i Active Autowerke Headers Dyno Run
Stock E90 328i Exhaust vs Active Autowerke N52 Signature Exhaust (Version One)
BMW E90 N52 Active Autowerke performance muffler install!
BMW 128i Active Autowerke headers exhaust clip
Active Autowerke BMW 328i Exhaust Test Drive | E9X N52 Exhaust
Rev Limiter with Active Autowerke Exuast Setup E90 328i N52
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Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
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