injectors
 

can i fit 440cc injectors to a93 wrx import and just carry on driving it or does it need setting up or mapping, cheers


also my revs are playing up a bit wen i first start the car they keep dropping, had this problem for a while so on sunday i had the plugs and packs changed and new fuel filter and pump any, and it is still doing it, any ideas

injectors need setting up i.e. remap

Rev problem is more likely to be a sensor such as the MAF,coolant temp sensor or idle control valve