This stainless steel Downpipe decat for the BMW 440i (F3x LCI) with a B58 engine is a performance upgrade that significantly improves exhaust gas flow. Removing the catalytic converter reduces back pressure, resulting in more power, higher torque and faster turbo response.
With a perfect OEM fit and an 80 mm diameter, this Downpipe is easy to install without any modifications. Combined with a Stage 2 tune, impressive performance gains are possible.
Up to +104 pk and +170 Nm gain (depending on setup)
Benefits
• Significantly improved
exhaust gas flow• Faster turbo Spool-up and
response• Significant power and torque gains with
tuning• Perfect OEM fit•
Deeper and more aggressive exhaust note
Technical specifications
• Material: 304
stainless steel• Diameter: 80 mm•
Connection: OEM (80 mm)
• Type: decat Downpipe•
model year: from 2016
performance (Stage 2 estimate)
• Power: 326 pk → ±430
pk• torque: 450 Nm → ±620 Nm
Results depend on tuning and other upgrades
Compatibility
BMW• BMW 440i F32 (Coupé) –
B58• BMW 440i F33 (Convertible) –
B58• BMW 440i F36 (Gran Coupé) –
B58• BMW 440i xDrive (F3x LCI) – B58
Euro 6 models
with 3.0T B58 engine
Important information
• ECU tuning (Stage 2) required for optimal
results• May trigger fault codes without software modification•
Not permitted for use on public roads (depending on the country)
Contents
• stainless steel Downpipe
Frequently asked questions
What does a decat Downpipe do?
It removes the catalytic converter, allowing the exhaust gases to flow through more quickly.
Is this plug-and-play?
Yes, this Downpipe has OEM connections and fits straight away.
Is tuning required?
For optimum performance and to prevent fault codes: yes.
