So my 2003 gt does not start on the first try but the 2nd try starts up within 2 seconds. I have a 78mm throttle body cold air intake.I cleaned the IAC and egr still nothing I checked the fuel pressure got around 30-40 psi. Changed fuel filter was really black and dirty. Not sure if fuel injectors are clogged or I heard alternator might be a problem but I dont know how it would affect starting. Any help would be appreciated! Thanks!