What a gearbox (TCU) file actually changes — shift speed, clutch pressure, torque limits — and why DSG, ZF and PDK each need calibration matched to the exact transmission.
Performance
Articles on performance ECU tuning — Stage 1, gearbox/TCU and motorsport extras.
Stage 1 Power: The Proven Way to Tune a Stock Car Right
Stage 1, Stage 2, Stage 3 — why GTBackup deliberately stops at Stage 1, and why a remote file can’t safely deliver Stage 2/3. The honest reasoning.
