DTC OFF: The Ultimate Professional Course
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NEW RELEASE 2026BEGINNER EDITION
DTC Off — Professional Training
The Complete Beginner's Guide to ECU DTC Removal
From zero to hero — 10 chapters, real examples, step-by-step walkthroughs with WinOLS & HxD, checksum fixes, and 5 real car case studies.
- Understand how DTCs work inside ECU memory
- Find & identify DTC tables (DAMOS & Manual)
- 2 proven methods to remove DTCs safely
- Fix checksums like a professional
- Real examples on real cars (Peugeot, BMW, Audi…)
- Legal & ethical guidelines included
10 Chapters
120 Pages
Real Examples
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Chapter 7 — Real Example: DPF Off on Peugeot 206

GM / ACDELCOCOMPLETE GUIDE
Delco ECU Engineering
ACDelco Tuning & Calibration Bible
The ultimate workshop guide for GM ACDelco ECUs. Real hex dumps, manual map discovery, Stage 1/2/X modifications, checksum algorithms, and real workshop case studies. Covers E39, E78, E80, E82, E83, E87, E92, E98, MT20U, MT22.
- ACDelco ECU Family Tree — E39 to E98 & MT series
- Read/write bench mode for every supported ECU
- Manual map discovery without DAMOS
- Boost Target, Torque Limiter, Ignition Timing maps
- Stage 1, Stage 2, Stage X full workflows
- Checksum algorithms & practical exercises
- Covers GM Chevrolet, Buick, Cadillac, GMC, Opel
12 Chapters
210 Pages
Workshop Tested
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HYUNDAI / KIAKAFICO EDITION
Practical ECU Calibration — KAFICO
From Zero to Professional — Hyundai & Kia ME17.9.x Series
Complete step-by-step workshop manual: Boost Target, Torque Limiter, Ignition Timing, Driver Wish, Lambda, DTC Disabling. Stage 1, Stage 2, and Stage X. Real maps, real offsets, real results — from raw binary to professional calibration.
- KAFICO file layout — 3 memory regions explained
- 7-step map discovery method — no DAMOS needed
- Boost Target Map — full before/after tables
- Torque Limiter, Ignition Timing, Driver Wish, Lambda
- Stage 1, Stage 2, Stage X complete workflows
- Covers ME17.9.21, MEG17.9.21, ME17.9.11, CPEGD
- Real offsets with hex verification steps
10 Chapters
37 Pages
Real Maps
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HP TUNERS VCMULTIMATE EDITION
DTC OFF: The Ultimate Professional Course
Diagnostic Trouble Code Deactivation and Tuning with HP Tuners VCM Suite
The complete professional reference for DTC deactivation using HP Tuners VCM Suite. 6 core modules covering every step from MPVI connection to final flash, plus 5 real worked examples: Cat Delete, AIR Delete, DPF Delete (diesel), MDS Disable (Chrysler Hemi), and EGR Delete. Includes EPA compliance guidance and a full DTC reference table.
- MPVI setup & OBD-II connection — step-by-step hardware guide
- Read DTCs with VCM Scanner before any calibration changes
- Navigate Engine → Diagnostics → DTCs in VCM Editor
- Disable any DTC: Error Mode, SES Enable, Misfire settings
- 5 worked examples: Cat, AIR, DPF, MDS & EGR delete
- EPA compliance guidance & permanent DTC handling
- Full DTC reference table — P0xxx to manufacturer codes
6 Modules
120+ Pages
5 Real Examples