If high output injectors did nothing then why would Heath sell them, but SSD is a scam?
They do help, and maybe Bisons or Schiker's threads could explain why, as in I beleive it has been stated in the past that some of the fuel in the plunger doesnt get injected and gets recycled. Well if the injector orifice is larger then more fuel volume can flow in the same given time and pressure, and less would be recycled.