do speed chips like this one really work?
http://cgi.ebay.com/ebaymotors/20HP-TOYOTA-POWER-SPEED-CHIP-CAMRY-CELICA-COROLLA_W0QQcmdZViewItemQQcategoryZ33597QQitemZ8026677600QQrdZ1#ebayphotohosting
http://cgi.ebay.com/ebaymotors/20HP-TOYOTA-POWER-SPEED-CHIP-CAMRY-CELICA-COROLLA_W0QQcmdZViewItemQQcategoryZ33597QQitemZ8026677600QQrdZ1#ebayphotohosting