first off anyone know whatt cc IPT 4105 injectors are? they are obd1, i got them from a friend a while back he said it was on a stock civic but i'd like to verify the cc's.

also, i cant get my car to idle lower than 1500, i've tried adjusting the dizzy and idle screw with no luck. the engine is an ls/vtec with i/h/e, fuel pump and rail. any ideas?