Calibrated Power Stealth Mach 2 (67mm) Drop in VGT Turbo | 2024-2026 L5P

Stealth Mach 2 Turbo for L5P Duramax (2024–2026)

The Stealth Mach 2 is the ultimate drop-in turbo upgrade for 2024–2026 L5P Duramax trucks. Designed for maximum performance and easy tuneability, it delivers up to 750 HP worth of airflow while maintaining fast spool-up, strong drivability, and excellent EGT control. Supersedes DM1QQ1070303000.

Key Features

• Airflow supports up to 750 HP
• Up to 625 RWHP with stock emissions + basic mods
• Proven 750+ RWHP in competition setups
• 67mm 11-blade billet (2618 alloy) compressor wheel
• 66.4mm 9-blade 713C nickel alloy turbine wheel
• Custom vane cage for larger turbine fitment
• Lightweight rotating assembly for fast response
• Direct bolt-on, no core charge
• Retains factory exhaust brake

Benefits

• Major improvement in top-end power and airflow
• Lower EGTs under high load and high RPM
• Quick spool-up with strong throttle response
• Surge-resistant even when towing
• Easy to tune, no custom tuning required to run
• Increased durability over stock components
• Distinctive turbo whistle
• Compressor (67mm): Billet design provides ~81 lbs/min airflow (vs 60 stock) with wide efficiency range
• Turbine (66.4mm): Larger, thicker blades improve durability, reduce drive pressure, and control EGTs
• Custom Vane Cage: Enables larger turbine and improved exhaust energy capture
• Rotating Assembly: Lighter and precision-balanced for faster spool and efficiency

Fitment

• 2024-2026 Chevrolet Silverado 2500HD/3500HD
• 2024-2026 GMC Sierra 2500HD/3500HD
• 6.6L L5P Duramax