The CTS Turbo 3.5″ high-flow catalytic converter for BMW N55 with a pneumatic wastegate actuator is designed to provide the best possible exhaust gas flow. It replaces the standard downpipe and enables more efficient exhaust flow.
The product was developed using modern CAD technology, ensuring an exact fit in the factory downpipe position. It is made from T304 stainless steel, TIG-welded by hand and welded with oxidation protection on the inside for long-term reliable operation.
Product details:
- Precisely designed and tested on the vehicle under real-world conditions
- T304 stainless steel construction, TIG-welded and protected on the inside
- Replaces the restrictive factory downpipe
- Effective exhaust system upgrade
- Distinctive sporty exhaust sound that remains refined during cruising
- No unwanted droning when combined with the factory exhaust system
To eliminate the check engine light (CEL), which may appear after installation, suitable software calibration is required. The use of a suitable Bootmod3 software upgrade is recommended. The product is intended exclusively for use off public roads and is not road-legal in the EU.
135i or 335i vehicles manufactured after 07/2013 require a 4″ downpipe.
Suitable for: BMW 1 II (F20/F21), BMW 3 VI (F30/F31/F34/F80).
Compatible vehicles (manufacturer data)
| Vehicle | Chassis | Years | Engine |
|---|---|---|---|
| BMW 335i | — | 2012–2013 | — |
| BMW 335i xDrive | — | 2012–2013 | — |
| BMW M135i | — | 2012–2013 | — |
Before ordering, check that the product matches your vehicle (model, year and engine). If in doubt, write to us — we will check for you.
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