Mind you that my dramatic mileage increase came only after I installed the DIY rear cambers and front eccentric alignment bolts, with a true 4-wheel laser alignment.
HIGHLY recommended !!!
I have now done the DIY rear cambers from Speedway on my roadster and on 2 other Crossfires.
Thanks for the DIY syfi.
NOTE: If you want a chuckle, watch the video from syfi's DIY sticky on youtube and turn the closed captioning on !