BMW X3 M40i OPF Decat Downpipe with Heat Shield
Unlock serious performance, faster turbo spool and an aggressive exhaust note with this BMW X3 M40i OPF decat downpipe. Engineered for OPF and PPF models, this 4.5 inch catless turbo downpipe is the ultimate performance exhaust upgrade for the G01 X3 M40i 3.0L turbo petrol.
Key features
- Constructed from SS304 aircraft-grade stainless steel for strength, durability and corrosion resistance
- Precision TIG welded in house for a perfect fit and long-term reliability
- Huge 4.5 inch outlet straight off the turbo for rapid turbo spool and sharper throttle response
- High-flow, mandrel-bent design for maximum gas flow without sacrificing mid-range torque
- Integrated heat shield to control under-bonnet temperatures
- Lower exhaust gas temperatures and reduced back pressure to relieve the turbocharger
- Substantial weight saving over the factory catalytic converter
- Transforms sound with a deeper, more aggressive exhaust tone
Proven gains
We have tested this product and found increases of around 20 to 25 bhp, with noticeably faster spool and improved response. Customers love the way it livens up the X3 M40i, delivering the performance and sound this platform deserves.
Fitment
- BMW G01 X3 M40i 3.0L OPF model
OPF and PPF vehicles only.
Installation notes
- Professional installation recommended. Many have found it very straightforward to fit, but exhaust tolerances can vary
- You must swap the gasket at the turbo end of the downpipe. Failure to do so can cause a fuel smell in the cabin
- We recommend adding Lambda Sensor Spacer(s) to help prevent an engine light in most cases. Search our other items to purchase
- When fitting this downpipe the OPF will need to be coded out and the car tuned
Fitting service
Want it supplied and fitted by the specialists who use and recommend it? Nforcd can install this decat downpipe at our Warwickshire facility. Request a fitting quote at Sales@nforcd.com.
Why choose this BMW X3 M40i decat downpipe
- Maximum flow from a 4.5 inch catless design for real-world power gains
- Quality SS304 stainless steel and expert TIG welding for a long-lasting upgrade
- Heat shield included to keep temperatures in check
- Designed specifically for OPF and PPF models for correct fitment
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