bigger injectors = retuned ecu?

im considering upgrading to slightly bigger inectors on my ka.

while im here, what size injectors are on a ka-e?

would i ned to tune the ecu to account for the extra fuel?

i know this is a newb question and i aplogize ahead of time.

matt

ka injectors are 260cc i believe. you will need an safc. why do you want to do this? are you going turbo?