Ok, maybe I'm missing something. I was trying to calculate the injector size I would need by using dyno data I could find along with RC's online flow worksheet. Anyway, if you take the dyno data from Importbuilders turbo B20 provided on http://www.hondata.com (372whp/438chp; 550cc/min injectors; 84% duty cycle) and plug it into RC B.S.F.C calculator it spits out a valuse of 0.45 . This is assuming fuel pressure is at 55psi. Even at 65psi you still get a low value of 0.49 . And this was good for stated a/f ratios in the low 12s. Are Honda engines THAT fuel efficient?

Any thoughts on this?

 

Ok, I've input the numbers into the calculator from the other dyno sheets on Hondata's website and I keep getting values around .45-.47. Where is the typical .60-.65 I'm used to hearing?

 

with my setup 11.9:1 a/f was good for .64.. interesting