Mustang Fuel Injectors: Frequently Asked Questions

Fuel injector upgrades are needed when your stock setup can no longer provide enough fuel for the amount of air in the system. Usually if you add a super or turbocharger, or make engine modifications such as heads, cams, etc., you will want to upgrade to larger injectors to accommodate for the larger intake of air.

• Getting the right size is very important. Using injectors that are too big will add too much fuel and make the car run sluggish. Going with too small of an injector will make the car run lean. Use this calculator to find out which is the right size for you.
  
  Use this calculator to find out which is the right size for you.

Yes. Anytime you increase fuel injectors, it means that you have increased the air induction. To have the proper mixture of air and fuel, you will need to get a tune.