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