What's the difference between TSI and TFSI?

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Tags

1. #acronym
2. #while
3. #previously
4. #engine
5. #stratified
6. #direct
7. #having
8. #stated
9. #charger
10. #gasoline
11. #induction
12. #subsidiary
13. #concept
14. #injection
15. #forced
16. #turbo
17. #petrol
18. #volkswagen