I have swapped my d series over to MPFI using a y8 mainfold. the injectors i have are OBD1 i believe. I looked them up and they are 5CC bigger than the stock OBD0 injectors. I think these are 240 and the OBD0 are 235CC. The vehicle runs a little rich. Will getting the correct injectors help or will it not make a differnece or am i wasting my time. The engine is bone stock. 91 hatch d15.