Turbo Downpipe Milltek BMW 3 Series G80-G81 M3, 4 Series G82 M4 - with HJS High-Flow Cat HQ 200 CPSI V2 - Type 102

Milltek Sport Downpipe with High-Flow Catalytic Converter for BMW 3 Series G80-G81 M3 / 4 Series G82 M4

Want a Stage 2 on your BMW 3 Series G80-G81 M3 / 4 Series G82 M4 without giving up the catalytic converter? This large-diameter Milltek Sport downpipe with high-flow catalytic converter combines a high-flow catalyst with an opened-up tube for a more responsive turbo.

Technical specifications

• Milltek part number: SSXBM1333
• Product type: Downpipe with high-flow catalytic converter
• Details: Large-diameter downpipe and HJS high-flow catalytic converter HQ 200 CPSI V2 - Type 102
• Tube diameter: 76.2 mm (3 inch)
• Fitting information: Fits OEM DPF or Milltek Tube 102 DPF bypass - ECU remap required
• Material: aerospace-grade stainless steel
• Manufacturer: Milltek Sport (UK)

Compatible vehicles

• BMW 3 Series G80-G81 M3 3.0 Turbo S58 (M3 and M3 Competition, xDrive, Sedan - Touring, 2020-2025, with DPF)
• BMW 4 Series G82 M4 3.0 Turbo S58 (M4 and M4 Competition, 2020-2025, with DPF)

Not sure about compatibility with your vehicle? Contact us with your VIN before ordering.

Frequently asked questions

• Is an ECU remap required? Yes. A suitable Stage 2 map is essential to get the full benefit of the gain and to avoid an engine warning light linked to the lambda sensors. It is the most frequently asked question from buyers, and the answer is always the same.
• 200-cell high-flow catalytic converter: it maintains real emissions control while allowing much more flow than the original. It is the choice of tuners who want to keep a clean-running vehicle.

Why choose Milltek Sport?

Milltek Sport designs and manufactures its exhausts in England, with mandrel-bent tubes to preserve the internal diameter and a fit developed on the vehicle. The result: a clean installation without modification, and a sound tuned to remain pleasant for daily use.

Further reading

• Downpipe: decat or high-flow catalytic converter for your Stage 2?