Evolution M BMW M5 G90 & G99 Secondary Cat Delete Downpipes – No ECU Tune Required

Unlock a deeper, louder and more aggressive V8 exhaust sound with the Evolution M Secondary Cat Delete Downpipes for the BMW G90 M5 and G99 M5 Touring. Engineered specifically for the S68 4.4L twin-turbo V8, these performance exhaust pipes replace the restrictive factory secondary catalytic converters while retaining the original primary catalytic converters.

The result is a more exciting exhaust note, improved exhaust flow and enhanced driving character — without requiring ECU unlocking, coding or aftermarket tuning.

Unlike a full catless downpipe system, the Evolution M Secondary Cat Delete is designed to operate with the factory engine management system without triggering a Check Engine Light (CEL).

For BMW M5 enthusiasts seeking a noticeable exhaust sound upgrade without complicated software modifications, Evolution M offers a straightforward, high-quality and cost-effective solution.

Key Features & Benefits

• No ECU Tuning Required – Designed to work with the factory ECU software.

• No Check Engine Light (CEL) – Engineered to avoid triggering engine management warnings when replacing only the secondary catalytic converters.

• No ECU Unlocking or Coding – No software modifications or aftermarket calibration required.

• Aggressive V8 Exhaust Sound – Delivers a deeper, louder and more engaging exhaust note.

• Improved Exhaust Flow – Reduces restrictions in the factory secondary exhaust sections.

• Retains Factory Primary Catalysts – Original primary catalytic converters remain untouched.

• Premium Stainless Steel Construction – Engineered for durability, heat resistance and long-term reliability.

• Direct-Fit Design – Developed for the BMW G90 M5 and G99 M5 Touring.

• OEM Exhaust Compatibility – Designed to integrate with the original exhaust system.

• Excellent Value – A performance-focused exhaust upgrade without the cost of a complete exhaust replacement.

More V8 Sound. No ECU Unlocking. No Tuning.

The BMW G90 M5 and G99 M5 Touring are powered by BMW's advanced S68 4.4L twin-turbocharged V8 engine. While the factory exhaust provides a refined driving experience, the secondary catalytic converters contribute to reducing the engine's natural exhaust character.

The Evolution M Secondary Cat Delete Downpipes replace these restrictive secondary catalyst sections, allowing the V8 exhaust note to become deeper, louder and more pronounced.

Since the original primary catalytic converters remain installed, this upgrade is designed to work with the factory ECU calibration.

No ECU unlock. No coding. No aftermarket tuning required.

This makes Evolution M Secondary Cat Delete Downpipes an excellent choice for enthusiasts who want a more aggressive BMW M5 exhaust sound without the complexity of a full catless conversion.

Evolution M Secondary Cat Delete vs. Full Catless Downpipes

Unlike full catless downpipes, which replace both the primary and secondary catalytic converters, the Evolution M Secondary Cat Delete targets only the secondary catalytic converter sections.

This offers several advantages:

• Retains the original primary catalytic converters

• No ECU unlocking or custom tuning required

• Designed to avoid Check Engine Lights

• Simpler installation compared with a complete downpipe replacement

• Enhanced V8 exhaust sound while retaining more of the factory exhaust system

• An ideal sound-focused upgrade for the S68 engine

Vehicle Compatibility

• BMW M5 G90 Sedan – 2024+

• BMW M5 G99 Touring – 2024+

• Engine: S68 4.4L Twin-Turbo V8

Installation & Important Information

Evolution M Secondary Cat Delete Downpipes are designed to replace only the factory secondary catalytic converters while retaining the original primary catalytic converters.

No ECU unlocking, coding or aftermarket performance tuning is required for the intended installation.

Professional installation is recommended to ensure correct fitment and proper exhaust sealing.

Emissions Notice: Removing secondary catalytic converters can affect vehicle emissions compliance and road legality, even when the primary catalytic converters remain installed. Intended for motorsport or off-road use where permitted. Buyers should verify local regulations before installation.

Why Choose Evolution M Secondary Cat Delete Downpipes?

The Evolution M BMW M5 G90/G99 Secondary Cat Delete Downpipes offer an ideal combination of aggressive exhaust sound, improved exhaust flow and straightforward installation.

With durable stainless steel construction, vehicle-specific fitment and no required ECU software modifications, Evolution M delivers a premium exhaust upgrade for enthusiasts looking to unlock more of the S68 V8's unmistakable sound.

Looking for more information? Just ask us.
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Email Us: autotopnl@gmail.com