I have a N/A 07 Mustang GT, and plan to go with a supercharger in the near future. But I want to run the new injectors beforehand to make sure the fueling is smooth/even so I'm not trying to diagnose any possible issues in the future with a new DW300 pump, supercharger, and injectors all at the same time.
Do you recommend the FRPP M39 (39# blue Cobra) or the FRPP LU60 (60# Siemens) injectors? With the 60s, I could run full E85 later on with the blowers I am considering. But how would either injector run w/ the N/A engine? I know people say it is "overkill" but I am interested in driveability in N/A - knowing I will add a blower in the future. American Muscle's page for the LU47 said those are not recommended for forced induction on the 05-10 4.6L 3V V8s for some reason. I think it might have to do with the tiny O-rings for the intake manifold side of the injectors... But those style (including the LU34A) are very different and my 4.6 3V never ran right with the LU34A (Boss takeoffs) no matter what I did.
It seems fairly easy to tune for the M39s as Edelbrock's tune only changed the 4 scalar settings for the injectors. The LU60s would have more headroom but I am hesitant to spend the money only to find that the FRPP settings don't work well with the 4.6 3V in either N/A or FI configurations.