Engine & Emissions Pack eBooks

Diagnose smarter, not harder.
This digital Engine & Emissions Pack includes A6 Electrical, A8 Engine Performance, and L1 Advanced Diagnostics eBooks. Learn how to test circuits, interpret scan data, diagnose emissions failures, and solve complex driveability issues with proven, shop-tested methods. Perfect for study, reference, and ASE prep—anytime, anywhere.

Instant access. Big savings.