PLM Downpipes with EPA High-Flow Cats – BMW S58 G80 / G82 / G87 M2, M3 & M4

PLM Downpipes with EPA High-Flow Cats – BMW S58 G80 / G82 / G87 M2, M3 & M4

Part Number: PLM-DP-G80-CAT

Product Description:

The PLM EPA-Compliant High-Flow Downpipes for the BMW S58 platform are engineered to deliver substantial improvements in exhaust flow, turbo response, and overall performance while maintaining compatibility with EPA standards for OBD2 vehicles outside California emissions regulations.

Designed in-house using advanced Faro CMM 3D scanning technology along with CAD and CAE software, these downpipes provide precise OEM-level fitment and exceptional build quality. Constructed entirely from premium stainless steel with precision TIG welds and CNC-machined flanges, they are built to withstand the demands of high-performance street and track applications.

These downpipes feature 400 CPSI EPA-compliant metallic catalytic converters, helping reduce exhaust restriction while maintaining a cleaner exhaust output and minimizing unwanted exhaust fumes. Compared to factory downpipes, the PLM setup improves turbo spool, throttle response, and exhaust tone while retaining a refined sound profile.

Key Features:

• Genuine PLM High-Flow EPA Downpipes
• Designed specifically for BMW S58 engines
• EPA-compliant 400 CPSI metallic catalytic converters
• Full stainless steel construction
• Precision TIG-welded assembly
• CNC-machined flanges for accurate fitment
• Direct bolt-on installation
• Improved exhaust flow and turbo efficiency
• Reduced backpressure for increased performance
• Quieter and cleaner operation compared to catless setups
• Limited production design
• Includes PLM 1-year warranty

Performance Benefits:

• Faster turbo spool and improved throttle response
• Increased horsepower and torque potential
• Reduced exhaust restriction
• Improved exhaust sound without excessive drone
• Cleaner exhaust operation with high-flow catalytic converters
• Excellent upgrade for tuned or modified S58 vehicles

Fitment:

Compatible with the following BMW models equipped with the S58 engine:

• 2021–2024 BMW M3 G80
• 2021–2024 BMW M4 G82 / G83
• 2023–2024 BMW M2 G87

Installation Notes:

• Direct bolt-on replacement for factory downpipes
• ECU tuning recommended for optimal performance
• O2 sensor spacers/adapters may be required on untuned vehicles
• EPA compliant for federal OBD2 applications outside California
• Not CARB compliant for California emissions standards
• Professional installation strongly recommended