DCE Parts B58 Downpipe - BMW M140i, M240i, 340i, 440i, 540i - Non OPF - Slip On Clamp Type
Unlock serious performance from your BMW B58 engine with the DCE Parts Downpipe. This BMW B58 downpipe upgrade is one of the best bang for buck modifications for the M140i, M240i, 340i, 440i and 540i Non OPF models. Reduce back pressure, speed up turbo spool, enhance throttle response and unleash a deeper, more aggressive exhaust sound on your BMW M Performance model.
At Nforcd we have fitted these DCE downpipes on customer cars and our own builds. The results speak for themselves. Sharper spool, stronger mid‑range pull and a fantastic B58 soundtrack. Customers consistently report noticeable gains and improved drivability.
Why choose the DCE B58 Downpipe
- Performance proven on BMW M140i, BMW M240i, BMW 340i, BMW 440i and BMW 540i Non OPF B58 models
- Lower exhaust back pressure for quicker turbo spool and faster boost recovery after gear changes
- Typical gains of around 15 hp and 25 Nm from the downpipe alone, with further gains when combined with a proper ECU remap
- Richer, sportier B58 exhaust tone while retaining excellent driveability
- Slip on clamp type connection for an OE style fit to the factory system
Options to suit your build
- Catless Decat Downpipe - maximum flow and performance for off road use
- Catless with Catalytic Converter Look - stealthy OE style appearance with catless flow
- High Flow Sports Cat - 200 cell metallic high flow catted downpipe for strong performance and a more road focused setup
Fitment - Non OPF B58
Designed for BMW Non OPF B58 models including:
- BMW M140i
- BMW M240i
- BMW 340i
- BMW 440i
- BMW 540i
F and early G chassis applications as applicable to the above B58 models.
Tuning and use
- For proper operation and optimal power output on a catless setup, an ECU remap is required
- A downpipe upgrade is an ideal foundation for Stage 1 and Stage 2 B58 tuning, intake and intercooler upgrades
- This product enhances sound and performance by reducing back pressure and allowing the turbo to build boost earlier
Important notes
- Catless downpipes and catless catalytic look downpipes are suitable for off road use only
- 200 cell sport metallic catalytic converter downpipes are suitable for road use in most countries - always check your local laws before purchase and installation
Professional fitting by Nforcd
We recommend professional installation. Nforcd offers expert fitting and ECU tuning support at our workshop in Warwickshire. Request a fitting quote at Sales@nforcd.com.
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