ok my 98 gsr was throwin 2 ecu codes at me and they were 72? and 45! the 72 i got rid of w/ a new distributor and now i assumed the 45 will go away also (45 Fuel system too rich or lean), but it remained. someone advised me to get a new fuel filter and some other etc. stuff to get rid of 45... what were they? plz help. thx