Originally posted by Seawulf:
http://www.rceng.com/technical.htm
Go here and fill in the blank. Actually now that I go back and check the site I see that the HP is at the crank, so 27lb/hr injectors will only support 170 Crank HP.
Stock injectors will only safely support about 150 hp. Seems like the 27s should do more but that's also counting the difference in NA HP vs FI HP.
EDIT: Remember, we got an I4 so that also means 4 injectors. 
Please think about what you are talking about......SVT Contours have 19lb injectors which can handle over 200hp. Every Focus guru has said the stock injectors on the Focus can handle about 175 hp. Now with the whole FI thing.....for example the Jackson Racing S/C puts down about 40-45HP to the wheels which would put it OVER 150HP and no injector upgrade. How is that possible? 
Hector
2003 Rally Red Mitsubishi Evolution VIII
257HP/259TQ
2005 Lapis Blue Mazda 6s
RET: 00 Cabernet Red Ford Contour Zetec ATX SUPERCHARGED
160HP/141TQ
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