20yr old injectors aren't gonna flow evenly across all 4 in the same rail/car as they are all carboned up differently. The beiges i have r brand new and will fuel equally... Thought it'd make it run nicer thats all...

If theres no advantage and it might damage my beiges i won't bother, until i get the right chip for them.

Do you know if Fiesta RST Blues are the same as XR2i blues? The numbers on them are the same... Also are the fuel pumps the same?