We know that 560 evo injectors are supposed to flow nearer to 600cc (jeff @ dsmchips). You're looking at 25% if that's accurate, just to get to stock ratio. If they do flow only 560, you're still richer than a street tune. Kevin, can you explain how you got 4% richer from -20% fuel? How much fuel should he take out to get to 10.5:1 flowing 560cc?