So I have read in several places that TSI's actually do nothing to reduce the under hood temperatures, and in fact take air away from the radiator.
1: Is there any truth to this?
2 & 3: Has anyone tried taping up the back of the one that does not go into the cold air intake? Would that help relocate some of the air back to the radiator?
4: if none of this works, why do they exist?
Thank you in advance!