[s-cars] FMIC Alternatives - ROT thoughts

[Matt Russell]

I'm glad this discussion has resurfaced.  Been meaning to shoot an 
email off (to you, Bruce) as I'm VERY interested in doing this in my 
car, but may need a it of guidance, unless the instructions included 
with the Aquamist kit are good.

Anyone care to speculate on how WI would work at altitude with 91 
octane?  I'll be lucky if I can put enough $ into this car to take her 
to full rs2, so i'm looking for ways to keep my MTM car happier than 
she is right now.

Plus it's such a great idea.

-Matt, co
92 s4

On Wednesday, February 25, 2004, at 09:00  PM, Bruce wrote:

> Message: 8
>
> It's managed (the 2D system I used) by tapping a lead off a fuel 
> injector,
> and using that to drive a high-speed valve which cycles according to 
> the
> duty rate of the fuel injector. Essentially, you're adding a 6th fuel
> injector, except it's spraying water/washer fluid.
>
> It is tied to boost pressure as well, so there is an absolute that it 
> won't
> come on below (I set mine at 15lbs of boost). There are simpler 
> systems,
> which just use a boost pressure setting and then come on full, but 
> it's hard
> to get the nozzle sizing right, as at part low boost you'll get too 
> much
> water, and at high boost too little water.
>
> With the valve, it's variable flow, so you can use a bigger nozzle and 
> be
> confident it won't make the car bog at lower boost/throttle settings.
>
> The main washer fluid tank would last me one 30 min track session in 
> the
> summer heat. It would last a really long time on the street...probably
> weeks, unless you drive on the street like I do on the track. You could
> always plumb an aluminum tank in the trunk if you want to keep things 
> slick
> and separate.
>
> B