handyandy

what exactly is a 30lb and 42lb fuel injector? what are the pros and cons? What do they do?

handyandy

bump

handyandy

double bump? no one?

Matts00GT

You will only need a larger fuel injector IF you need more fuel. I.e. forced induction. However, if you can really push the limits N/a many people upgrade to 24lb injectors. The pound rating refers to how many pounds of fuel it can push/flow per hour. In metric sizing these are measured in cc's.

As you get more boost or air into the motor, you need more fuel for combustion. Hence why you must upgrade to larger injectors and/or fuel pump. Not too tough of a concept and not HIGHLY advanced, but this is a basic idea.

It gets really in depth when you get into air/fuel ratio, injection mode (sequential or batch), pulse width, volumetric efficiency, etc, etc.

handyandy

Thanks for the reply lol, someone finally. So with larger injectors I guess gas mileage is DEVASTATED right? (assuming people really care about mileage with a supercharged mustang).

Matts00GT

Devastated? Nah. Will it decrease? Of course. It requires more fuel to run. I think the drop is roughly 3 mpg. Well worth the power increase. Plus you only burn that much fuel under boost conditions. It would be devastating if you were to floor it everywhere.