Quote:
Originally Posted by ChazInMT
A recessed block will give you 95% of the benefit of a smooth one...
...By diverting the air around or over your car, you are sending it on a less resistive path than going through your radiator and engine bay.
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I'm assuming this to be somewhat true since the factory grille shutters GM put in the lower grille opening are recessed quite a bit. Although on a mass production platform like the Cruze I bet the Engineers had to work within a lengthy set of compromises to get the idea into production, the largest of which could have been the requirement to work with the same facia as all the other models...