Putting In Bigger Injectors

[Mr. Oizo]

When you put bigger injectors into your car, do you have to chip/remap the ecu?

If you dont, will it run rich because the ecu is tuned for smaller injectors?

Or will it figure itself out?

[KamikazeR33]

if ur putting injectors in that means ur tune is as far as it will go with that fuel system, as soon as u upgrade them u would want to retune to make the most out of them

if ur putting bigger injectors in a std car u sir are a moron

[R31Nismoid]

Stock ECU cant handle injector change.

Neither can aftermarket one till you tell it what its using

[Dale FZ1]

A bit like a PC - you have to configure it so that it knows what its working with. The autodetect and multitude of drivers that most systems come with these days makes it far easier, but the principle is the same.