One of my Mustangs had a tricked out injection system that was tuneable direct from a lap top. Could re do the fuel curve and timing curve.... The Street and Performance unit isn't????

PS... I have no idea how the thing worked. I have a nephew who is both a hot rodder and a computer guy. All I did was tell him what I wanted the ignition and fuel to do, and he punched it in..... Worked great!!!...till my nephew moved, then I sold the car and went back to carbs!!!!!