BMW 430i 430ix B48 Decat Downpipe – Stainless Steel Performance Upgrade
Unlock power, response and sound with this BMW 430i and 430ix B48 decat downpipe. Precision made from SS304 aircraft-grade stainless steel and expertly TIG welded, this catless downpipe is designed for serious BMW B48 performance. It fits 2.0 litre turbo B48 petrol engines in 430i and 430ix models and delivers faster turbo spool, a sharper throttle response and a more aggressive exhaust note. Expect noticeable gains of around 12 to 15 bhp, reduced backpressure and lower exhaust temperatures, plus a substantial weight saving over the factory catalytic converter.
We built this B48 downpipe for maximum flow and durability. The top section is formed from a single piece with no welds, unlike many cheaper alternatives. A full 3.5 inch stainless outlet runs straight from the turbo for optimal gas velocity. Mandrel-bent tubing maintains maximum internal diameter for smooth flow and real-world drivability without sacrificing mid-range torque. This is a proven BMW B48 downpipe upgrade with a lifetime warranty.
Key features
- SS304 aircraft-grade stainless steel construction
- In-house TIG welded for strength and longevity
- One-piece top section with no welds for reliability
- 3.5 inch stainless pipe straight out of the turbo for faster spool and sharper throttle
- Noticeable power gains of approximately 12 to 15 bhp
- More aggressive exhaust note that sounds truly amazing
- Lower exhaust gas temperatures and reduced backpressure to relieve the turbocharger
- Improved cylinder charge and substantial weight saving vs the factory cat
- Mandrel-bent for better gas flow and maximum internal size
- Lifetime warranty
Fitment – BMW B48 2.0 Turbo
Fits the following BMW models with the B48 engine:
- BMW 230i and 230ix F22 and F23 2016 onwards
- BMW 320i, 330i, 330ix and 330e F30 F31 F34 2016 onwards
- BMW 430i and 430ix F32 F33 F36 2016 onwards
- All B48 2.0 litre petrol turbo engines
Important: this will not fit 2018+ models with a PPF filter unless it has been coded out and removed. The connection at the bottom is sleeved. Please check this before ordering as the 2018 models are different. Contact us if you are unsure.
Installation and advice
Professional installation is recommended, as exhaust tolerances can vary and some cars are tighter than others. Feedback on this product is that it is easy to fit. For fitting, choose Nforcd in Warwickshire. Request a quote at Sales@nforcd.com.
We also recommend purchasing a lambda sensor spacer to help prevent the engine light in most cases. Search our other items to add one to your order.
Why buy this BMW 430i 430ix B48 decat downpipe
- Real performance gains with quicker spool and stronger response
- Catless downpipe sound and drama with premium build quality
- Best-in-class B48 downpipe design with lifetime warranty
- Trusted by enthusiasts with excellent customer feedback
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