Add-on | Downpipes | 3” High-Flow Turbo Downpipe w/ Heat Wrap | Duramax & Powerstroke

Dyno Diesels High-Flow Downpipe with Heat Wrap

Aluminized or Stainless Options

The Dyno Diesels High-Flow Downpipe is engineered to replace the restrictive factory downpipe found on Duramax and Powerstroke platforms. Designed as the missing link between the turbocharger and aftermarket exhaust systems, this downpipe improves exhaust flow at the most critical point in the system—directly off the turbo.

By eliminating the crushed and restrictive OEM pipe, this upgrade reduces backpressure, lowers exhaust gas temperatures, and improves turbo efficiency for stronger, more responsive performance.

All downpipes ship with high-heat thermal wrap to manage under-hood temperatures and protect surrounding components.

Material Options

Downpipe material and construction may vary by application:

Stainless Steel (Duramax & Powerstroke)

• Heavy-wall mandrel-bent 3” tubing
• Durable stainless steel construction
• High-heat thermal wrap included
• CNC-machined steel flanges for precise fitment
• Designed for strength, heat control, and performance

Stainless Steel (Chevy Duramax Only)

• 3” round stainless steel tubing
• Long-lasting corrosion resistance
• Premium thermal heat wrap for superior heat retention
• Precision-formed for smooth exhaust flow and durability

Performance Benefits

• Smoother exhaust flow directly off the turbo
• Reduced exhaust gas temperatures (EGTs)
• Faster turbo spool-up
• Improved throttle response
• Increased overall performance
• Deeper, more aggressive exhaust tone

This is a functional performance upgrade—not a cosmetic part.

Fitment

• 2008–2026 Ford Powerstroke 6.4L / 6.7L
• 2004.5–2025 Chevy GMC Duramax 6.6L
  • LLY
  • LBZ
  • LMM
  • LML
  • L5P

Installation Notes

• Designed for direct replacement of the factory downpipe
• Precision bends allow for a straightforward install
• Professional installation recommended due to tight turbo-area clearances

Shipping

• Ships via free ground service

Dyno Diesels Engineering Standard

Dyno Diesels downpipes are built around measured airflow improvement, heat control, and long-term durability. Every design focuses on solving factory restrictions with properly engineered components—no shortcuts, no generic bends.

Dyno Diesels — Engineered flow. Controlled heat. Built to perform.