That's .7 ohm IMPEDANCE, not resistance. While it's basically the same thing, it's not really the 'same thing'.
As far as your original post about using the 16F84A to do this...there are much better ways. The ol' 16F84A, while it was the shiznit back in it's day and is still very useful, is wayyy outdated these days and has been superceded more than a few times.
Get a faster PIC, an 18Fxxx that'll run 40Mhz vs. 10Mhz. At least then you have the possibility of sub-microsecond accuracy (not saying you'll get it, but the possibility is there).
Get a PIC with multiple PWM outputs. There's a few out there. Use the parametric search function at www.microchip.com
And as I said before, use a REAL injector driver. National, Motorola, not sure about Microchip itself, Linear. They're out there. I'm not at the house, don't have access to my good notes for this info.
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