Im about to finnally get smaller injectors for my pretty much bone stock car, going from Accel 30's to stock 24's. What things are to be achieved, less risk of washing down walls, but is mpg going to improve and how about performance numbers? im pretty sure the car was never tuned for the bigger injectors. Thanks guys!

 

guess nobody knows lol jp

 

If car was tuned for the bigger injectors and will be tuned for the smaller injectors then there shouldn't be any change.
If the car was never programmed for the 30's then it should have been running rich a lot of the time. If this is the case your mileage and driveability should improve by going back to the stockers.