Samwise,
It really depends on how I drive. I'm 17 so its real hard for me to stay out of that 2nd barrel
If I stay out of the second barrrel I can get about 15-16 mpg. If i just haul out the whole way to school I get about 9mpg. The first barrel to my experence is fine for just driving around. Good enough acceleration that off a light your still keepin up with most, as for the second barrel, its great. On my truck I have flowmasters, and when i hit that second bareel it gives it a whole nother tone that sounds like a racecar its awesome. Overall really peped my engine up and can't beat it for the price.
Joseph
