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| * These injectors are very difficult at short pulse-widths. Once you get to 1.5 ms (what you have at idle) they are not linear anymore, shorter pulsewidths can mean more fuel instead of less which makes the fuel calculation inaccurate. I'm not certain that this sloppiness is true for all "1600 cc/min" injectors, at least those that I've come across. $FlgChr1$FlgChr> I have determined that once you get above a volume per cylinder above 0.6 liters you have no real issues. The overall efficiency of the engine also plays a big role, cams, valves per cylinder and such things. $FlgChr2$FlgChr> In your case you are at 2.8/6=0.47 liters which is in the trouble zone, especially given that it is a modern efficient 4 valve/cyl engine. You have to accept some idle and low load problems with these injectors. I have seen some low-Z 1200 cc/min injectors with a different design that would be interesting to test, I'm pretty sure they would do better (www.racetronix.com). $FlgChr3$FlgChr> Regards / Mattias |