Garret Turbo Technical info.
Turbo tech Basic 101. - Covers basic info, how it works, diagrams, part names etc.
Turbo tech Advanced 102. - Covers more indepth info, formulas, AR, CR with boost etc.
Turbo Tech Expert 103. - Covers understanding compressor maps, formulas etc
Turbo Optimisation. - How to optimize your turbocharger system & the 11 point checklist.
Answers to FAQ's about Turbos, intercoolers etc. - Common questions about a turbo setup.
Couple of pictures from the website: