[XTheOwl]

OK, I am very green at performance modifications, seeing as I've only had my car for a week, so I was just wondering:

How much time will 3.73 gears and underdrive pulleys shave off quartermile and 0-60 times? Are we talking a tenth of a second at best? Half a second?

What if I added an H or X pipe? Another tenth of a second? Or is this just for sound?

Thanks for any help,

xto