Just completed my mods this weekend (with the help of a fellow club member). Currently configured with a One ball, 15% pulley, and a K&N HAI.

Questions:

1) Has anyone dyno'ed their car with similar mods before and after that can quantify the improements in Torque and HP at the wheel? My Butt dyno tellls me I have more...noticed I can jump on it to pass without downshifting anymore. But, being an engineer I love "data".

2) What kind of gass mileage changes have you noticed? My OBC showes a huge gain but after one tank with only the one-ball it was about 2mpg higher, but I might have just been babying more or had more highway miles than normal. Curious what others have seen...