If all you changed is a turbo you wouldn't need to touch injector scaling unless either the injectors weren't properly scaled or new injectors were added. Also the change in airflow when you change a turbo only happens when the turbo hits a higher boost level than the smaller turbo could ever have achieved at the same rpm. Like the poster above says, out of boost this is a moot point.

OT, OP stay out of boost and you'll be fine.

 

Really, so a bigger turbine doesn't flow more than a smaller turbine at the same shaft speed? That's like saying a 3" exhaust doesn't flow more than stock unless you turn the boost up...


And yes, you can adjust injector scaling. That way you don't have to adjust the RPM/VE table around as much. It's speed density, you can do anything you want to adjust fueling. It's big picture thing since the ECU doesn't know how much air is going through the motor other than what you tell it. So you can tell the ECU their is more air by adjusting RPM/VE so you get more fuel, or you can tell the ECU the injectors are smaller so that you get more fuel since you have the same injectors.