https://wn.nr/kQShp7

Answer-
cooling system
oil in turbo
fuel management
boost control
Engine management

Prize:
- 1x Dewalt 25' Tape Measure, 4x Tape Boss Voice Recorders, 1x Craftsman Tool Box, 1x Craftsman 51pc Socket Set, 1x Launch X431 Creader VIII Code Reader (approximate total retail value or "ARV": $300.00 USD)