With a little luck, you will see a one mile per gallon increase with the free flow air filter and Corsa type exhaust replacement. Probably will pay for itself in 50,000 miles at $2 gas. Having monitored several vehicles, I have also documented a small increase in fuel economy by switching to Mobil 1/synthetic oil. Same payback, as the increase will essentially pay for the cost of the oil change at 5,000 mile intervals. Obviously driving conditions have the greatest effect. My '04 H2 with the Corsa, Airaid, and Mobil 1 will dependably maintain 15 mpg on flat interstate in a no wind condition with cruise set at 69 mph (65mph speed limit-no traffic stops at 4 over). But, after leaving the freeway and entering into urban stops and starts, hills, and stop light idling, it is nearly impossible to stay above 13mpg for the tank.
|