Ok let me ask this??
Since the fuel pressure regulator is set at a certain pressure. Since u change the injectors the pressure regualtor will still in essence still produce the same amount of fuel pressure. So the #24 pound injectors will have less strain on them to produce fuel but still produce fuel set by the computer and regulator. Unless u have an optomizer for your atermarket fuel system or MAF. IT should still idle and run fine. No riching problems.
I state this because in Ford rangers that had before i wen tto a 5.0 (yeah). The 3.0 in it is was running lean, due to the higher compression that came from the factory. To fix this we would replae our #14 injectors with #19's and everything would run perfect. Unless u purchased a adjustable fuel pressure regulator!! But eh maf and computer did not throw and codes or show gas mileage difference. Also took away our detonation problesm, even though we ran a 92+ octane adn cleaned injectors every 3k miles.
Now thinking for returnless system, Is there a regulator??
