Duramax LML (2011–2014) – CTZ Tuning Files Package

The most comprehensive Duramax LML CTZ Tuning Files 2011–2014 — 150+ calibration files covering every major configuration: stock, tow, performance, SOTF, DSP5, PPEI, manual T-case, cab-chassis, van, shuttle bus, ambulance, and year-specific OS tunes.

⚡ Instant download after payment — high-speed download link provided.

⚠️ Important Notice – Legal Use Only
This product is intended strictly for off-road, motorsport, and non-emissions-regulated applications only. By purchasing this product, you confirm compliance with all applicable local, state, and federal emissions laws and regulations. Diezeltuner is not responsible for any misuse of this product.

Files only — no additional instructions included. Make sure you understand this job before purchasing.

⚙️ Software Details

• 🔧 Engine: Duramax LML 6.6L Diesel
• 📅 Years: 2011–2014
• 📄 Format: .ctz (CTZ calibration files)
• 💾 Total Files: 150+
• ⚡ Delivery: Instant download

📊 Coverage Summary

• ✅ 2011–2014 LML — all major configurations
• ✅ Single and dual tank variants
• ✅ Manual T-case variants
• ✅ DSP5 switch variants
• ✅ Shift-on-the-Fly (SOTF) 0–160HP
• ✅ Cab-chassis, van, shuttle bus, ambulance
• ✅ CP3 & CP4 pump conversion variants
• ✅ 64MM & 66MM VGT Turbo variants
• ✅ PPEI, Danville Performance, T&K tunes
• ✅ Year-specific OS: 12644094 • 12645750 • 12646249 • 12649244

💪 HP Levels Available

• ✅ Stock • Clean • Street • Mild • Light Tow • Heavy Tow
• ✅ 20HP • 30HP • 40HP • 50HP • 55HP • 60HP • 70HP • 90HP • 100HP • 120HP • 150HP • 160HP
• ✅ SOTF 0–120HP • 0–130HP • 0–150HP • 0–160HP

📁 Complete File List

🔧 General 11–14 LML Files

• ✅ 50HP / 30HP / 40HP / 70HP single Manual T-CASE
• ✅ 40HP / 50HP Danville Performance
• ✅ 50HP Deleted Full flash
• ✅ 66MM VGT TURBO – 10MM CP3 SOTF
• ✅ Ambulance Deleted • Heavy Tow • Light Tow • MAX • Mild • Street

🚚 Tow Tunes

• ✅ TOW Clean • TOW Clean 10MM CP3 • TOW 20/30/40/50HP single
• ✅ Tow Manual T-CASE • T&K Manual T-CASE Tow (CP3 & standard)

🔄 DSP5 Files

• ✅ DSP5 Clean • Mild • Max Effort • Manual T-CASE (x2)
• ✅ 2011 DSP5 OS 12646249 • 2013 DSP5 Manual T-Case OS 12645750

🔄 SOTF Files

• ✅ Universal Clean & Max Effort (x2 each) • 64MM VGT (x2)
• ✅ CP3/CP4 • Max Fuel • SOTF 0-150HP EGR Temp-Sensor Switch
• ✅ 100% Injectors S467 Turbo • Danville 0-120HP / 0-160HP
• ✅ Year-specific: 2011 / 2012 / 2013 / 2014 (Clean, Max Effort, 64MM x2 each)

🔧 PPEI Files

• ✅ 40/50/60/70/100/150HP single • 50HP 10MM CP3
• ✅ Manual T-CASE: 40/55/90HP (standard & CP3) • SOTF 0-120/150/160HP
• ✅ Cab-chassis Dual Tanks SOTF 0-130HP & Tow

🚚 Cab-Chassis, Van & Bus Files

• ✅ Cab-chassis 30HP single • Tow Dual Tanks (Type #1 & #2) • Dual Tanks Deleted
• ✅ Van: Stock (x2) • Tow (x2) • SOTF 0-100HP • Deleted Single
• ✅ Shuttle Bus: Stock 4500-5500 (x2) • Tow single (x2) • Charter Bus Tow (x2)

🗓️ Year-Specific OS Files

• ✅ 2011: OS 12644094 & 12646249 — Stock, C&C, Tow, DSP5, 2500/3500 variants
• ✅ 2012: OS 12646249 & 12649244 — Stock, Dually, C&C, SWFS
• ✅ 2013: OS 12644094 & 12645750 — Stock, DSP5, Tow, 2500/3500 variants
• ✅ 2014: OS 12645750 — 2500 4d LT, Deleted (x2)

🔧 TCM, E86A & Lettered Tune Packages

• ✅ TCM: Motor Ops A50 • PPEI A50 • PPEI 2015.5 T87 • A50 2013 (x3)
• ✅ E86A: Glow Plug OFF • SOTF CP3 66SXE 10MM • C&C #1
• ✅ Lettered Series: B Economy • C EcoTow • D Street • E Maxxx

The ultimate CTZ calibration package for Duramax LML 2011–2014 tuning professionals and diesel performance specialists. 🏆