Water Injection question
 

I have a cooling mist unit in the trunk of my car to cool off the supercharger intake air. I was told that every 2 tankfulls I should be empty on a 1 and 1/2 gallon water tank. 20 tankfulls later, it's only 1/4 used. Is it not working correctly? There are no kinks in the lines, and during testing it squirts out pretty well. What do you think?

I think you don't wot often enough.................. :lol: What boost level does it come on at? One or two nozzles, and what size nozzle? I only used the 1/2 gallon unit that Snow and others give you, and even that lasted 2-3 tankfuls, depending on my right foot.......... :rofl:

I'm WOT all the time, or so the local police say. :P
It's suppose to come on at 3000 I believe and It's one nozzle to the underside of the hat. It sprays pretty good when it's off. Trust me, my foot is always into it. I would guess 1000 miles and it's only 1/4 gone.

all the kits I've used are boost referenced (or maf), not rpm. Must be a very small nozzle if it works and isn't out of water yet. I've had a dozen of these kits, they use more water than you're using if jetted correctly.

Jody

Can setting the controls on the unit fix this? Make it come on sooner, or such?
Here are the settings

http://img24.imageshack.us/img24/5449/dsc0058c.jpg

I've never used that exact controller, but it appears to start spraying at 5 psi of boost or so and hits it's max pressure at 15 psi or so. Are you running 15 psi? If so, I'd probably have the max spray on a few psi earlier, maybe by 12 psi or so. Not sure what the tune gain dial does. You had said it comes on at 3000 rpms, but I don't see an rpm setting unless it's in the software somewhere.

Still wondering which nozzle size you're running.
Jody

I was not sure how that read, but 3k rpm maybe was about 5psi? That was just a guess. I'm only running 10 psi. Is that dial reading psi? So maybe I should dial the max down to 10? And dial the minimum down to 3 or 4?
Thanks again Jody. :thumbsup:

I took this from their website:

The 10 position tuning button ensures you have proper flow in situations where you need to lower or raise the flow. This feature changes the max dutycycle of the pump. This is great for fine tuning. As you turn the knob higher you get more dutycycle. In otherwords, it will lower the maximum flow of the injector when you lower the knob. If you have tuning needs you can hook up our free software to change the start pressure, max pressure or curve of the system.

the minimum pressure dial is the boost psi that the pump will start pumping water; the max pressure is the boost level that the pump is at 100% pressure. So starting around 4-5 psi or so is fine, but you should lower the max setting to 9-10 psi. By having it set at 15 psi the pump is never on all the way until 15 psi of boost, which you'll never reach.

They do this so the pump speed increases as the boost level climbs, which is a much preferred method as compared to just turning the pump on at 100% at a certain boost level. You don't need as much water at 5 psi as you do at higher levels, so they control the pump speed to ramp it up, with you controlling when it starts and ends with the min/max settings. I'd guess the center tune knob adjusts how aggressive the pump ramps up between the two for fine tuning.

Mike, also check he size of your injector nozzle like Jody recommended. You'd be surprised at how little the nozzle can actually flow. Cooling mist offers 2 nozzle sizes, you'll need the larger- I can check on the number if you need. Sometimes, higher horse applications require dual nozzles to get the job done.

Also, as the other guys said, lower your max spray setting to 10lbs or less. Without an intercooler, I'd be surprised if you are reaching 10 psi. If you can, run a vacuum line to a vacuum gauge & measure actual boost. Ultimately, when the system works right you'll suck through the Methanol.

Did one on a Procharged ZZ430 in a '58 'vette recently. Allowed for more timing when cooled, and power increased substantially. Hell, it was too fast already so we toned it down again.....mainly wanted it to keep the setup running cool.