actaully it locks the signal in place. Meaning that even if you cram more air into the motor. More fuel is NOT going to be added unless you have the Greddy E-Manage or some other type of fuel computer to augment the stock fuel curve. Otherwise.... BOOM!!!! buhbye #6 piston.suprasucka said:i thoguht the lex afm lets you pull in more air as well as raises fuel cut, fcd just lets u raise the fuel cut by how much i want.
FCD = :evil: