Unleash the Full Sound and Performance of Your S58
Upgrade your BMW G80 M3 or G82 M4 with EMP’s handcrafted Heatshield Catless Downpipes, engineered specifically for the S58 platform. Designed in-house and tested on our own G80 M3, these downpipes deliver better throttle response, quicker turbo spool, and an unmistakably aggressive exhaust tone.
Each downpipe is handcrafted from 304 stainless steel, TIG welded by certified professionals, and CNC-machined for a precise, bolt-on fit. Whether you're looking for track-day performance or raw street presence, EMP downpipes provide the airflow and sound your build deserves.
These downpipes are flow-optimized using CAD/CAM software and tested on the dyno to ensure performance gains with or without a tune. Expect +20 WHP / WTQ gains stock,
Key Features
Designed for BMW G80 M3 / G82 M4 (S58 engine)
Heatshield Series: Crafted for thermal control and performance
+20 WHP / +20 WTQ gains without tune
60+ HP / 100+ TQ potential with tune
CNC-machined flanges, v-bands, and O2 sensor bungs
Handcrafted from 304 stainless steel
TIG welded by certified professionals
Aggressive, deep exhaust note
Bolt-on fitment using precision-engineered jig
Fully flow-optimized using CAD/CAM simulation
Developed and tested in-house on EMP’s G80 M3
What’s Included?
(2) EMP Heatshield Series 304 Stainless Steel Catless Downpipes
Hardware Kit (gaskets, bolts, brackets as needed)
Compatibility
BMW G80 M3
BMW G82 M4
Engine: S58 Twin-Turbo I6
Fits all trims and variants within the platform unless otherwise noted.
Performance Gains
Untuned Gains: +20 WHP / +20 WTQ
Tuned Gains (Stage 2 or custom): +60+ HP / +100+ TQ
Unleash the Full Sound and Performance of Your S58
Upgrade your BMW G80 M3 or G82 M4 with EMP’s handcrafted Heatshield Catless Downpipes, engineered specifically for the S58 platform. Designed in-house and tested on our own G80 M3, these downpipes deliver better throttle response, quicker turbo spool, and an unmistakably aggressive exhaust tone.
Each downpipe is handcrafted from 304 stainless steel, TIG welded by certified professionals, and CNC-machined for a precise, bolt-on fit. Whether you're looking for track-day performance or raw street presence, EMP downpipes provide the airflow and sound your build deserves.
These downpipes are flow-optimized using CAD/CAM software and tested on the dyno to ensure performance gains with or without a tune. Expect +20 WHP / WTQ gains stock,
Key Features
Designed for BMW G80 M3 / G82 M4 (S58 engine)
60+ HP / 100+ TQ potential with tune
CNC-machined flanges, v-bands, and O2 sensor bungs
Handcrafted from 304 stainless steel
TIG welded by certified professionals
Aggressive, deep exhaust note
Bolt-on fitment using precision-engineered jig
Fully flow-optimized using CAD/CAM simulation
Developed and tested in-house on EMP’s G80 M3
What’s Included?
(2) EMP Series 304 Stainless Steel Catless Downpipes
Hardware Kit (gaskets, bolts, brackets as needed)
Compatibility
BMW G80 M3
BMW G82 M4
Engine: S58 Twin-Turbo I6
Fits all trims and variants within the platform unless otherwise noted.
Performance Gains
Tuned Gains (Stage 2 or custom): +60+ HP / +100+ TQ
Maximize the performance and sound of your BMW G80 M3 or G82 M4 with FI Exhaust’s precision-engineered downpipes, available in Catless or 200-Cell Sport variations. Designed specifically for the 3.0L twin-turbo S58 engine, these downpipes deliver faster turbo spool, increased horsepower, and a more aggressive exhaust tone.
Options Available:
Catless Downpipes: Maximum flow and performance. For off-road or race use only.
200-Cell Sport Catted Downpipes: High-performance with emissions-conscious design. Reduced CEL risk.*
Key Features:
Direct fit for BMW G80 M3 / G82 M4 with S58 3.0L Twin Turbo engine (2021+)
Available in Catless and High-Flow 200-Cell Sport Cat versions
Constructed from premium T304 stainless steel
Improved Turbo Response: Less back pressure = quicker spool and more power
Aggressive Exhaust Note: Noticeable increase in volume and turbo sound
Precision TIG-welded and tested for fitment and durability
Compatible with both OEM and aftermarket exhaust systems
*Note: Catless version may trigger CEL. A tune or O2 spacers are recommended. Sport Cat version significantly reduces CEL likelihood.
SHIPPING INCLUDED.
Upgrade your BMW G42 M240i with the FI Exhaust Valvetronic Catback System — engineered for enhanced sound, improved exhaust flow, and premium durability.
Designed for the 3.0T B58 platform, this system delivers a deeper, more aggressive tone while maintaining refinement for daily driving. The integrated valvetronic technology seamlessly adapts to your drive modes — quiet when cruising, aggressive under throttle.
Constructed from high-grade T304 stainless steel, the system features a direct bolt-on design with no cutting or permanent modifications required.
System Configuration
• Front Pipe
• Mid Pipe
• Valvetronic Muffler
• Quad Silver Exhaust Tips
Please message us separately for catless or 200 cell downpipes*
Fully retains OEM valve functionality — no remote or controller required.
Shipping & Production
Shipping, tariffs, import duties, and related fees ($470 value) are included in the listed price. No hidden costs.
Each system is built to order with an estimated 3-week production lead time prior to shipment.
Unlock the true potential of your BMW M3 G80 or M4 G82 with the FI Exhaust System, meticulously crafted to deliver unparalleled performance, sound, and aesthetics. Designed to enhance both the driving experience and the overall presence of your BMW, our exhaust system stands as a pinnacle of aftermarket engineering.
Why Choose FI Exhaust System for Your BMW M3 G80 or M4 G82?
Front Pipe + Mid X-Pipe + Valvetronic Muffler + Quad Silver Tips (Compatible with OEM Elect. Valve - No Remote Control Included)
Optimized Performance: Our exhaust systems are expertly engineered to maximize airflow, resulting in increased power, torque, and throttle response. Experience a noticeable boost in performance that truly elevates your driving dynamics.
Exhilarating Sound: Immerse yourself in the symphony of a finely tuned exhaust note. Our exhaust systems deliver an exhilarating sound profile, combining deep bass with refined tones, ensuring an unforgettable auditory experience every time you hit the throttle.
Craftsmanship and Quality: Crafted from high-grade materials and precision-engineered components, our exhaust systems are built to last. With meticulous attention to detail, each exhaust system undergoes rigorous testing to ensure uncompromising quality and durability.
Shipping Included.