Tuning Issues, I am out of ideas

[Jeff Chambers]

A speed density system is going to keep firing the 24# injectors for the same amount of time (injector pulsewidth). You could have someone like Autologic burn a chip that would compensate for the increased injector size, but SD just isn't that accomodating to overall changes. A guru like Mike Wesley might say otherwise, but for your basic layman its a tough system to tune with.

You could try lowering your fuel pressure to compensate for the 24# injectors, but don't go too low or you'll risk affecting the fuel atomization.