The BMW G90 M5 is already an engineering masterpiece, blending luxury and raw power through its twin-turbocharged S68 V8 engine. But if you’re an enthusiast chasing maximum performance and an aggressive exhaust note, there’s one upgrade you shouldn’t overlook: G90 M5 catless downpipes.
What Are Catless Downpipes?
Downpipes are critical components in turbocharged engines. They connect the turbochargers to the rest of the exhaust system. Stock downpipes typically include restrictive catalytic converters to meet emissions regulations, but they also limit performance. Catless downpipes, on the other hand, remove these restrictions—maximizing exhaust flow and turbo efficiency.
The Performance Advantage of G90 M5 Catless Downpipes
Installing G90 M5 catless downpipes can transform your driving experience. Here’s how:
1. Maximum Horsepower and Torque Gains
Catless downpipes eliminate exhaust restrictions, allowing your turbos to breathe freely. This results in significant horsepower and torque increases—especially when combined with an ECU tune.
2. Faster Turbo Spool and Sharper Throttle Response
With improved exhaust gas flow, turbos spool faster. You’ll feel quicker throttle response and stronger acceleration across the rev range.
3. Unleashed Exhaust Sound
One of the most noticeable changes comes in the form of sound. G90 M5 catless downpipes dramatically amplify your M5’s exhaust note, delivering a deep, raw, and aggressive tone that reflects the power under the hood.
4. Track-Ready Performance
For track enthusiasts and performance purists, catless downpipes offer the best possible flow characteristics—ideal for maximizing power on high-performance builds.
Recommended G90 M5 Catless Downpipes
Looking for the perfect fit? The AXI Performance G90 M5 Catless Downpipes are precisely engineered for the S68 engine. Made from high-grade stainless steel with smooth mandrel bends and TIG welds, they deliver optimal flow, durability, and performance. These downpipes are a direct fit replacement for the factory units, making installation straightforward for professionals.
Tuning and CEL Considerations
Because G90 M5 catless downpipes eliminate the catalytic converters, they may trigger a check engine light (CEL). A performance ECU tune is highly recommended to optimize engine parameters, prevent CELs, and fully unlock the power gains of the upgrade.
If you’re looking to maximize your G90 M5’s performance, sound, and driving excitement, G90 M5 catless downpipes are the ultimate mod. With increased power, faster response, and that unmistakable exhaust growl, this upgrade brings your M5 to life in a whole new way. For serious enthusiasts, the downpipe isn’t just a bolt-on—it’s a gateway to the full potential of the S68 platform.
Ready to upgrade? Check out the premium AXI Performance G90 M5 Catless Downpipes and experience the difference.