CTS Turbo BMW 30i B46 Downpipe

The CTS Turbo BMW 30i B46 Downpipe is a precision-engineered exhaust component designed to replace the restrictive factory downpipe on B46-equipped BMW 30i models. Constructed from mandrel-bent stainless steel, this downpipe significantly reduces exhaust backpressure while improving turbocharger spool and throttle response. The design optimises exhaust gas flow from the turbo outlet, making it an essential upgrade for dealers looking to extract more performance from tuned B46 engines. Ideal for professional installations where improved power delivery and enhanced exhaust note are required.