Fule mileage part 2

[Dave Gearhart]

Thanks for all the replys and tips. How do i calculate my tire size to real mileage and what octane fule do most S/T owners use? Does removing the air box silencer really make that much difference in sound and preformance?

 

[Ben Poche]

i mostly run 87 reg.the only way that is accurate is buy using a G.P.S. air box silencer makes very little difference in performance it does make extra sound when you open it up but not enough to be annoying. and it's fuel not fule.

 

[Johnny O]

I'm not sure if this is right, but using milesticks and the radar sign at a toll booth I figure my speedo is off by 10%. So I add 10% to my miles then divide by the fuel used. It seems to come out right.