It'll work with the Fast & Furious crowd the dash is aimed at but someone looking at gas cost savings will think twice before buying a motor that commands a definite 20~30 c/gal premium over the others. I'd be really amazed if the thing reaches 40 mpg if you step on it hard enough to make the turbo worth the while. (I can hear the slurping sound on mine when the tach hits 3.5 k...)
Granted, they have not yet released the compression specs for the Tigershark edition of the 2.0 and 2.4 so it is possible they all need 91+, but then they may be shooting themselves in both feet.