Calibrated Power Stealth STR Drop In VGT Turbo | 2024-2026 L5P

Stealth STR Turbo for L5P Duramax (2024-2026)

The Stealth STR is a high-performance, stock-appearing drop-in turbo designed for 2024-2026 L5P Duramax trucks. Built to improve reliability, airflow, and spool-up, it delivers up to 625 HP while remaining easy to install and tune; no custom tuning required. Supersedes DM1QQ1070103000.

Key Features

• Supports up to 625 HP (with supporting mods)
• +80–100 RWHP over tune-only setups
• 62.5mm 7+7 blade extended tip billet (2618 alloy) compressor wheel
• 66.4mm 9-blade 713C nickel alloy turbine wheel
• Lightweight rotating assembly (~6% lighter than stock)
• Direct bolt-on, no core charge
• Retains factory exhaust brake

Benefits

• Lightning-fast spool-up and throttle response
• Improved EGT control under load
• Works with stock tuning, box tuners, or custom tuning
• Surge-resistant even when towing
• Increased durability over stock components
• Distinctive turbo whistle
• Compressor: Billet wheel provides ~66 lbs/min airflow (vs 60 stock) with wide efficiency range
• Turbine: Larger 9-blade design improves exhaust flow, lowers drive pressure, and reduces EGTs
• Rotating Assembly: Lighter, precision-balanced for faster response and efficiency
• Optimized Setup: Designed for easy tuning and real-world drivability

Fitment

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