The definition of a rule is  an official regulation, code of regulations or set practice. An example of a rule is that a red light means stop. An example of a rule is an employer demanding their employees arrive at 8am.
The average cost for a fuel injector replacement is between $231 to $342. Labor costs are estimated between $168 to $213 while parts are priced between $63 to $129. Get a personalized estimate based on your location and specific car.
The fuel injectors that are in your BMW are more than adequate for stock engines, and supply more than enough fuel for maximum power and open throttle. For your engine to achieve maximum power, it must have a air/fuel ratio maintained within a certain range.