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Originally Posted by wred
Sorry for the late reply. I don't visit this site often and I forgot about this thread.
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Been awhile, forgot about this forum to. (What forums do you hang out at?) Building WI from scratch, sounds interesting. Thanks for the offer regarding parts. I may in fact need some nozzles but I think I?m set for now.
I?m still bungling around a bit. Turns out for my "six" the aic fires at between 35-300HZ, from idle to redline respectively, or once per ignition fire. No valve that I can find is capable of that. (Except a fuel injector, more on that later)
I got another AIC for fuel, supposed to be pretty good. It has two mappable outputs. One is a PWM signal for the fuel injector and one is a 1-5v analogue signal (convenient, both channels being under 1 software hat).
The analogue V. (with an amp.) could, I guess, be used with a progressive valve or pump, or go through a PWM converter to run an HSV valve (not sure how well this works, seems sloppy, frequency still needs to be dealt with).
But I still have another AIC (which means more software to deal with and to tune). But it would be independent & exclusive to a HVS, meaning I could set it up to fire at a more reasonable frequency. I picked up a little trick: lower the AIC freq. and use multiple injectors spaced upstream to avoid gaps in the H20 saturation during the course of a cycle (not crazy about adding more holes, bungs and nozzles though)
Yet another wrinkle, there?s a guy who uses regular fuel injectors (which I guess can handle the high frequency) for WI (
www.myo-p.com/ ). I?ve seen elsewhere where a 50/50 meth mix really inhibits corrosion of pretty standard PWM valves (frequency still an issue).
So, My options are:
1) Use a second AIC, retuned frequency to run an HSV (need two nozzles (??), 2 software packages to tune)
2) Use second AIC with a standard fuel injector for h20 ( corrosion, not clear how big an issue, car sits a lot though)
3) Use 1 AIC, covert 0-5v channel to PWM (has one interface, requires a converter with It?s own static tune or it goes up to 300 hz & uses fuel injector).
4) Same as above but amplify 0-5 channel for proportional valve or proportional control of pump ( not terribly accurate (but does it really need to be))
Thoughts, comments, ideas?
Thanks for youre reply,
Regards, PK