Wagner Tuning BMW M2 Competition/M3/M4 S55 OPF Front Pipe – 200 Cell Sports Cat Catalytic Converter (Euro 6/EU6, 200 CPSI) Catted Downpipe Kit, High-Flow 3" T304 Stainless, Direct Fit for F87 F80 F82 F83, GPF Compatible Performance Exhaust Upgrade

High-Flow 200 Cell Sports Cat Front Pipe for BMW S55 OPF Models

Unlock stronger mid‑range shove, faster spool and a sharper throttle with this high‑flow sports catalytic converter for the S55 twin‑turbo engine. Designed for OPF/GPF equipped BMWs, it delivers a serious reduction in exhaust restriction while maintaining a Euro 6 spec metal substrate and washcoat for excellent durability and emissions performance.

Built from 1.4301 stainless steel (T304) with a full 3 inch diameter and supplied with an adaptor to connect to the factory system, this premium front section is a direct, bolt‑on replacement for the original part. Expect cooler turbo temperatures, improved response and a deeper, more purposeful tone that complements both stock and tuned setups.

Perfect for these BMW models

• BMW F87 M2 Competition with OPF
• BMW F80 M3 with OPF
• BMW F82 M4 with OPF
• BMW F83 M4 Convertible with OPF

Key features

• 200 cell metal substrate sports catalyst with Euro 6 coating
• OPF/GPF compatible front pipe for S55 applications
• Precision 1.4301 stainless steel construction, 3 inch tubing
• Direct fitment with adaptor to the OE exhaust system
• Substantially reduced back pressure for increased power and torque
• Lower thermal load on the turbochargers for improved reliability
• 100 percent plug‑in fit that replaces the OEM section

Why choose this upgrade

This is a proven, high‑quality performance exhaust upgrade for F‑series S55 cars with OPF. We have installed this unit on customer vehicles and the feedback is consistently positive for drivability, response and build quality. It pairs brilliantly with a remap and other breathing mods, and works with the standard rear system thanks to the included adaptor.

Installation and tuning notes

Installation is straightforward for a professional technician. An engine management light can appear due to the higher‑flow catalyst; the DME/ECU diagnostics will need to be calibrated or coded accordingly as part of your tuning plan.

Professional fitting

Want it fitted properly the first time? Book professional installation with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

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