Chip Tuning Chip tuning performance. DPF / FAP Diesel Particulate Filter deactivation. EGR EGR valve deactivation. AdBlue / SCR AdBlue / SCR deactivation. DTC Off Diagnostic Trouble Codes. Flaps Flap and throttle body optimization. Lambda / O2 Lambda and O2 sensor optimization. TVA Throttle Valve Actuator optimization. Start / Stop Start and stop system optimization. Hot start fix Hot start issue fix. Oil pressure fix Oil pressure issue fix. TPROT Tuning protection removal. Immo Off Immobilizer system optimization.