[Diy_efi] Custom Injector Driver Request

Sun Mar 14 01:32:00 GMT 2004

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Check www.aquamist.co.uk  They have an ECU with solenoid to drive their water injection
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<html><div style='background-color:'><DIV class=RTE>
<P><BR><BR>Hi all, I ran across this mailing list several times and I think it may be the best place to ask this.&nbsp; I am building a custom alcohol/water injection system and rather then using a NOS nozzle to inject it into the intake, I'd like to use a fuel injector due to the superior atomization.&nbsp; My problem is getting an injector driver that will suit my needs.&nbsp; I would like something that will read the boost pressure and at a certain boost start the injector at a low duty cycle.&nbsp; As boost increases, the duty cycle would increase also.&nbsp; The hard part is that I'd like to have 2 adjustments for tuning, the initial boost level that the injector starts, and the rate at which the duty cycle increases with boost.&nbsp; An example of a typical setup is this:</P>
<P>At 5 psi the injector starts at 20% duty cycle.&nbsp; It reaches 80% at 10psi.</P>
<P>I think I want to make 80% the max duty cycle if possible, and have the initial boost setting adjustable from 5psi to 15psi and the rate of increase (20% to 80%) adjustable from a 3psi range to a 10psi range.&nbsp; This should allow all the adjustment I need to get the system tuned right and should allow me to do it from inside the car.&nbsp; I have a basic knowledge of electronics and can probably put it together if someone can give me a schematic and parts list.&nbsp; I have seen additional injector controllers that I can probably make work but they are selling for around $400 and I can get a whole aftermarket injection kit for that.&nbsp; If anyone knows of any other parts I can buy to make this work, that would also be great.&nbsp; Thanks alot.</P>
<P>Anthony</P></DIV></div><br clear=all><hr> <a href="http://g.msn.com/8HMAENUS/2749??PS=">Get business advice and resources to improve your work life, from bCentral.</a> </html>

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