| Re: MPG -- Premium vs
Quote:
Originally Posted by lordlang  ... using 89 fuel ... getting about 18-19 mpg.
... premium gas ... it reads 21.2mpg. ... | That's more of a difference than I would have thought. Must be pulling a lot of timing when going to the lower octane.
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'05 CTS-V, Stealth Gray, Sunroof, 3M Clear Bra, B&M Shifter w/UUC Bushings, Specter Werkes Bushings, V Headrests, Wheel To Wheel Powertrain Tune, Corsa, Kooks w/Hi-Flo Cats, Ultimate Grid Pedals, Hotchkis Anti-Sways, STS-V Fogs, Ground Control 650R/600F, Mille Miglia Wheels, WW Clear Sidemarker Lenses, Full-Size Spare Tire Kit, Magnuson "Maggie" Polished w/2.8", CTS Console, FG2, KARS Stage III, Aggressive Street Alignment (per FAQ), MOMO Combat Evo Shift Knob. 472 RWHP/411 RWTQ (Mustang dyno). |