My car has stock tune, turbo, and white injectors. If I cruise around 70 on flat highways I can average up to 31 mpg depending on the trip. More often my average highway mpg hovers around 28.
I have supporting mods in place for either a 19t or 20t turbo which is coming up soon. With a new bigger turbo and tune, should I expect my mpg numbers to go down? How about if I go with green injectors, too - would my mileage be even worse with green injectors compared to the whites?
Also I'm curious, with the same turbo and the tune adjusted accordingly, what will the difference in power be between the white and green injectors?