Originally Posted by jsisabella
...My last tank of gas was $26.00 at $1.85/gal. 15% savings would be $3.90. The cost of chip upgrade and K&N filters - $490.00. That makes the payback period about 31 months. Obviously less time if gas prices keep going up.
Lowest I saw this last week, driving thru half a dozen states, was $1.79 for 93 octane in Staunton, VA. Look for premium to be at 2.50-3.00 or more within 31 months. Maybe a lot more depending on how our messed-up Middle East foreign policy plays out.