1990 F-150 5.0 EFI E4OD 4X4.
Do I need to do anything to my system now that I have 19lb injectors in my motor? I am just wondering if it will matter mutch if nothing else is done or is there something that I need to do?

 

The 5L engines came stock with 19 lb injectors. If you just changed them, nothing else to do.

 

So how big can I go before I have to do a lot of work to make them work like they are supposed to?