std engine help

[Dx18704]

soo if u take that plastic box off it will give you not as good mpg......i think i will wait till the spring to do that one since its cold out and i am really busy with work and skool

[dfarres]

my mpg was 36-37 stock...........after i put in a short ram intake, cat-back exhaust & took out that little brass plate i'm getting 33-35mpg.
A small price to pay for a little more pep.