Common Forced Induction Questions

[El Calor]

1. What are the main tuning problems when dealing with Turbos?
2. What are the main differences between a Single and Twin Turbo setup?
3. What is Turbo Lag?
4. What is Boost Threshold?
5. What is a boost leak?
6. How can I adjust the turbo boost?
7. What is boost spike?
8. What is boost creep?
9. What is compressor surge?
10. How does a Wastegate work?
11. What is the difference between a BOV and a Bypass Valve? How do they work, and are they necessary?
12. How should I break in a turbo?
13. What is/causes Shaft Play?
14. What is causing my turbo to sound like a sewing machine's whistle?
15. I want to make x horsepower, which turbo kit should I get? or Which turbo is best?
16. Does my turbo require an oil restrictor?

All the answers to these questions can be found here: my.IS - Lexus IS Forum - Turbo Definitions