Turner Motorsport Downpipe With High Flow Catalytic Converter - N55

Performance Sports Cat Front Pipe for BMW N55 3.0 Turbo Engines

Unlock real-world gains on your post-07/2013 BMW with the N55 3.0 turbo petrol engine. This precision-built performance catalyst section replaces the restrictive factory front pipe to improve exhaust flow, unleash stronger torque through the rev range, sharpen throttle response and deliver a deeper, more purposeful exhaust note. Built from premium 304 stainless steel and designed for OE-style, direct bolt-on fitment, it is the ideal exhaust upgrade for drivers seeking proven power increases without compromising build quality.

We run this upgrade on our own builds and our customers love the transformation. Expect faster turbo spool, harder mid-range punch and a smoother, freer-revving feel.

Dyno-proven results

• Peak gains: +11 WHP and +37 WTQ
• Maximum gains: +26 WHP at 5000 RPM and +42 WTQ at 3300 RPM

Why this sports catalyst upgrade

• High-efficiency 200 cell catalytic converter for increased flow and reduced back pressure
• All 304 stainless steel construction for durability and corrosion resistance
• Direct replacement fitment for factory hardware and mounting points
• Lower boost threshold and improved turbo response for quicker acceleration
• Transforms drivability with stronger mid-range torque and a crisper exhaust tone

Ideal for

• BMW N55 3.0 turbo engines with production date after July 2013
• Owners seeking a sports cat solution as an alternative to a decat pipe
• Stage 2 remap and ECU calibration packages where emissions fault-code management is required

Tuning and important notes

• Aftermarket ECU software is recommended to maximise performance and prevent emissions-related fault codes or a check engine light on stock calibration
• This product will cause a MIL on the factory tune
• Recommended calibration: Turner N55 tune ES3646920
• For off-road and track use only. Check local regulations before purchase

Fitting service

Want it installed professionally with alignment and hardware checked at the same time? Book fitting with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote.

Cross reference

18328602882

Search-friendly terms

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