Milltek GPF/OPF Bypass for BMW X3 X3M/X3M Comp (G01) 3.0 (with OPF/GPF S58 Engine - LCI only) (2022 onwards) – Filter Delete, Motorsport Use
This is Milltek's GPF/OPF bypass pipe for the BMW X4 X4M/X4M Comp (G02) 3.0 (with OPF/GPF S58 Engine - LCI only). It replaces the section of pipe housing the factory petrol particulate filter with a straight-through pipe, clearing the last major restriction left in a modern turbocharged petrol exhaust once a de-cat and remap are already in place.
It's aimed at owners already running a de-cat and a supporting remap who want to clear the final restriction in the system, not a bolt-on for a car that needs to stay road legal.
Because it removes the particulate filter, it's intended for off-road and competition use. A car with the GPF/OPF removed will fail an MOT emissions test and isn't legal to use on UK roads.
Specifications
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System Type: GPF/OPF Bypass
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Pipe Diameter: 80mm (3.15")
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EC Approved: No
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Race System: Yes
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Fitting Time: approx. 2 to 3 hours (Milltek figure)
Key Features
- Made from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration
- Mandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow
- 80mm (3.15") pipework
- Straight-through pipe in place of the factory petrol particulate filter (off-road and competition use only)
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- BMW X3 X3M/X3M Comp (G01) 3.0 (with OPF/GPF S58 Engine - LCI only) (2022 onwards)
- BMW X4 X4M/X4M Comp (G02) 3.0 (with OPF/GPF S58 Engine - LCI only) (2022 onwards)
Not suitable for: any model, engine or body style not listed above. Check your car before ordering.
Installation
Milltek quotes a fitting time of approx. 2 to 3 hours. Before ordering, note: OPF/GPF Bypass System - Requires OPF/GPF Bypass Module or Stage 2 ECU Software to OE Particulate Filter Back System Only. This work involves removing parts close to the turbo and engine, so we recommend fitting by a specialist with a ramp and suitable software support.
Upgrade Further
Also available from Milltek for this car: Milltek Downpipe-back Exhaust BMW X3 X3M & X3M Comp G01 3.0 (with OPF/GPF S58 Engine - LCI only) 22+.
Will it fit the BMW X4 X4M/X4M Comp (G02) 3.0 (with OPF/GPF S58 Engine - LCI only)?
Yes. Milltek lists this part for the BMW X4 X4M/X4M Comp (G02) 3.0 (with OPF/GPF S58 Engine - LCI only) as well as the other models in the fitment list above.
Is it road legal?
No. Removing the particulate filter means the car will fail an MOT emissions test, so it is for off-road and competition use only.
Do I need a remap?
Yes. Milltek notes: "OPF/GPF Bypass System - Requires OPF/GPF Bypass Module or Stage 2 ECU Software to OE Particulate Filter Back System Only". Without suitable software the engine management is likely to log faults.
Can I use it with my standard exhaust?
Yes. Milltek lists it for use with the factory (OE) exhaust system.
How long does it take to fit?
Milltek quotes approx. 2 to 3 hours.
What is it made from?
T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.
Is there a warranty?
Yes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.
