TUNER'S GUILD MEMBER
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Marek Brestovský

Marek Brestovský

SKSlovakia
Slnečná 1032, Dolná Streda
Member since 2026
CERTIFICATION PROGRESSION
Five levels, each earned through Tuners Guild training. Completed courses and levels open their certificates.
How levels work
Foundation
Foundation ECU & WinOLS® basics
  • WinOLS from ZERO
  • Safe read/write of ECU
2 courses to reach this level: WinOLS from ZERO and Safe read/write of ECU
Tuning Engineer
Calibration & Optimization
Reverse Engineer
Ghidra, ECU Structures & Logic
  • TriCore
  • Fundamental
  • Practice
  • Mastery
  • Renesas
  • Fundamental
  • Practice
  • Mastery
  • PowerPC
  • Fundamental
  • Practice
  • Mastery
ECU Authority
Complex and non-standard cases
Assigned individually by Tuners Guild. Not reachable through courses alone.
Instructor
Teaches and shapes the method
Assigned to Tuners Guild instructors.
How levels work →