Nforcd B58 400 pack

400 bhp Performance Upgrade Bundle for BMW 3.0 turbo six

Unlock serious real-world pace and responsive torque with our expertly curated 400 bhp upgrade bundle. Ideal for enthusiasts who want a fast, reliable daily and weekend weapon in one package, this proven setup delivers strong midrange punch, crisp throttle response and that addictive induction and exhaust note enthusiasts love. We run this configuration ourselves and our customers consistently rate it for drivability, value and repeatable results.

Optimised for UK roads and tuned in-house, this upgrade path is perfect if you are searching for BMW tuning UK, performance remap, power increase, induction upgrade, downpipe and sports catalyst options. Whether you call it a stage 1 or stage 2 style build depends on the hardware you choose from the options below, and we can tailor the calibration accordingly.

What you get

The listed price covers professional installation by our workshop team, with optional hardware and services available to customise your setup and push beyond the baseline target. Add a rolling road session for validated figures and fine detail calibration.

Optional add-ons to tailor your build

• Osprey intake v1 / v2 / v3 – induction kit for improved airflow and spool
• Panel filter – high flow replacement filter for the factory airbox
• Osprey 4.5 inch heat shield de-cat – downpipe with integrated thermal shielding
• Osprey 5 inch de-cat – maximum flow downpipe for track and off road use
• Osprey 5 inch super sport cat – high flow catted downpipe for reduced restriction
• Osprey 4.5 inch sport cat – performance catalyst with excellent drivability
• Custom map – bespoke ECU calibration to suit your chosen hardware
• Dyno run – rolling road verification and printout

Why choose this upgrade

• Noticeable power and torque gains with smooth, OEM-like refinement
• Enhanced induction sound and faster turbo response
• Proven reliability and repeatability from hardware we trust
• Configurable pathway to suit road, track or fast-road use
• Installed and set up by specialists with extensive platform experience

Fitting and tuning

Installation is carried out by MJ Modifications at our Warwickshire HQ. Want us to supply, fit and calibrate the entire bundle for your car, or to discuss the best combination of intake, downpipe and calibration for your goals? Request a quote today via info@mjmodifications.co.uk.

Good to know

• De-cat components are intended for motorsport and off road use where applicable.
• Power figures vary depending on condition, fuel quality and chosen hardware.

If you are searching for BMW performance upgrade, ECU remap, engine tuning, rolling road tune, induction system, downpipe upgrade, sports catalyst, custom calibration, Warwickshire tuning shop or BMW turbo six power kit, this is the fast and reliable solution trusted by our team and our customers.