Quote:
Originally Posted by dcb
mosier, do you get a voltage reading on that injector wire with the engine off but the ignition on (you shouldn't)? How far off is the consumption? Mine in the car is currently reading low by about half.
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I haven't had a chance to check voltage at the injector, but i'll try to get it done.
At a 55mph cruise, resetting current trip while in the cruise, holding that speed for a few miles, i get around 126mpg. I'd guess my car gets a little over 45, maybe up to 50mpg, at that speed. So I'm off by i guess 2.5. The mpg reading is using the microsecondspergallon variable, which we haven't proven yet. In my case, I don't think it's as easy as just doubling or halving a value.
My main concern is my uS per pulse really doesn't vary very much at all. I think the least I've seen on average is around 950uS at idle, and a little over 1000uS at other cruise speeds. I haven't seen anyone out there quote less than 1ms for any car, and most of what I've read says that most peak and hold injectors take at least that just to open.
I wonder if I were to hook up right at the ecu (as you had done initially). I went ahead and hooked up at the injector since it didn't work for you, and at the time, I thought our cars were going to be identical. Peak and hold injectors are supposed to have a resistor I believe.. I'm not sure if the resistor is in the ecu, or somewhere between the ecu and injector (i read some hondas can be converted to peak hold by grabbing a resistor box from an earlier honda). if the latter, then maybe that extra resistance is screwing with my reading?