after i take my greddy kit off and put everything back to normal,will my 00 civic ex be ok with the 310cc injectors stilled installed for the time being until i find stock ones,i figured it should be fine because its the ECU controlling the gas.

 

No. You will run way too rich.

 

Nah, you will be fine with the 310's.
The stock computer will lean them out so you won't be too rich.
Anything larger then that you'd have poblems with....
I think the drag kit comes with 310's and a fmu....and it idles just fine....I never had problems running 310's and a stock ecu.

 

ya the emanage tells the 310s to work to their potential so the stock ecu will make them work to the oem injector potentinal.