Originally Posted by Ender.
I really wouldnt use an SAFC for anything over 550s but thats just me.
Id seriously contemplate DSMlink, especially with a goal of 400+ hp.
I prefer not to use the SAFC for anything

, but sometimes it's all people have to work with. If he is willing to move to DSMlink, I'd say just to throw some 850's or 950's in there and not worry about injectors again. 650's are on the edge of what the SAFC can deal with, just on a raw correction percentage basis with timing issues and driveability going along with it.