Advanced Engine Performance Specialist (L1) Technicians holding L1 credentials work on modern powertrains where diagnosing misfire causes demands more than intuition. You’ll troubleshoot variable valve timing systems, direct injection anomalies, and adaptive fuel trim strategies?tasks that fill daily work orders at high-end repair shops and dealership performance departments.
| Exam Name | Advanced Engine Performance Specialist |
| Exam Code | L1 |
| Format | PDF & Practice Test Engine |
| Target Year | 2026 Updated |
| Features | 100% Verified Q&As |
