Hi
Don't worry about getting confused with the TFSI/TSI Abbreviations
All audi new Audi Turbocharged petrols use the TFSI Logo but some VW/Skoda cars with the same engine use different,They use TSI (Turbo-Stratified Injection) even though they have the same engine code,Even if you look at a VW/Skoda with lets say a 1.4 TSI (Turbo/Supercharger engine) Some people think that the TSI stands for Turbo-Supercharged-Injection but it still stands for Turbo-Stratified Injection.Very confusing but thats how it is.
Example
Skoda VRS/Polo GTI (185ish) Variant
Turbo/Supercharger engine known as a 1.4 TSI (Turbo-Stratified Injection)
Audi A1 1.4 TFSI (185) Variant
Turbo/Supercharger Engine known as a 1.4 TFSI (Turbo Fuel Stratified Injection)
Both the above engines are the same but yet across brand's they have different engine descriptionsA1 1.4 TFSI (122) Variant
Turbo Engine known as a 1.4 TFSI (Turbo Fuel Stratified Injection)
Even though the A1 (122) only has a Turbo and the (185) has a Turbo and a Supercharger they still use the same description,Only different Visually is the Centre console trim and S tronic as Standard

and of course different head shield in engine bay.
Audi TT 2.0 TFSI 211bhp
Golf GTI 2.0 TSI 211 bhp
Both have different engine descriptions but yet some/most are the same engine code Likewise with the New Golf R/Audi S3 same engines yet one i known as a TSI and the other a TSFI.
Of course VW do Turbo/Supercharged engine but just don't let the TSI fool you into thinking they are all Supercharged
Don't mean to be geeky just wanted to share some info from Audi College in Milton Keynes
Thanks