. "RWHP increase with this setting was 100 RWHP using a 50/50 mix of W/M."
WOW

 

I always run a 50/50 mix and i would say 70-100hp is definitely possible. When I flick the switch for my W/M the difference is huge. I have not been able to get on a dyno yet but wow. I have not seen a big drop in egt but with more water in the mix the cooling would improve greatly. Also my system uses a lot of fluid. Probably 3 full throttle runs to 85mph from a stop and my container would be empty (3-4qts) and my pump has not been set to bog my motor yet. More power still available hehe. My set up turns on at about 17psi and maxes out at 30psi.

 

You get a bigger gain if you have enough air. My truck is badly overfueled, which is why I only see 40 HP gain.

 

Sorry to dig this up but was just curious if you were still happy with the setup.

 

Yes.

 

Hmmmmmmmm I wonders what I would see with all my mods :evilgrin:

 

I have worked with both my Snow's and a friends Cool Mist. Both seem to work well! Personally, I don't care for all the Cool Mist bells & whistles.... too many possible problems. But when all set up, and working properly... it's great.

-I don't care for the light set up on the CoolMist controller... very hard to see what is happening, IMO. I would want to add a dash LED for when the system is injecting... same as I did for my Snow's]
-The nozzle designs are very different but both seem to atomize well.
-For towing, I would definately want an EGT controller as well as just boost settings. Uses less fluid, which is a big concern on longer trips.
-For just playing hard, or at the track, boost control is all that is needed.

I do believe two nozzles are needed on the Cummins. I have 2 of Snow's biggest... 625ml/min, at 40 psi. On long hill climbs these drop EGT's an honest 200-250*. But even with these two nozzles, at WOT, all I get is slower rate of egt climb and a quicker cool down after a run at the track.

If you like more sophisticated systems with bells & whistles... buy the CoolMist.
Snow's Stage III will give the same results but is a simplier design.
I know Snow's injection systems have high quality, all metal parts.
CoolMist seems to be well made also... but more time is needed to be sure, IMO.

RJ

 

The less added fueling you have, the more HP you will gain from H2O/Meth injection.
At 400hp I get 65 hp gain..... at 600 hp, I get 40 hp gain.

RJ

 

so in all of your experiences here, some with dynos, has anyone come to a conclusion as to how much GPH will begin to bog the 12v???

I know its kind of a subjective thing, being very dynamic with different turbos, but those who have got enough W/M to bog your engine... what size water nozzles do you have?

thanks in advance, Justin

jrussel - are you the jrussel from Salt Lake City?

 

Justin..... It's not just GPH... it's boost setting also!
When I first got my Snow's, with two nozzles and a single S300 turbo at 475 hp, I would start to quench combustion at 15 psi boost. Above that works fine.
Less fluid injection could go lower boost and run ok!
The other variable is how fast you bring in full psi injection. My Snow's is set up to start injecting at 20 psi.... ramping up to full pressure at 40 psi.

12v should not be much different.

RJ

 

This is a good thread but I would like to hear about towing and mpg improvements. I have the newer Vari-Cool II controller and use it for towing. So far only one short trip and used 3 gallons of water in 100 miles. Not enough to do mpg calculations with any confidence but water is cheaper then #2 so I really do not care how much I need to use. I currently have a 10 gallon tank in the bed but am looking at a under bed tank.

I set mine to start flowing at 10 psi boost and gets to 100% at 22 psi. I use a single smaller 375 nozzle and is intended to just add a little mass to the air flow.

Going on a 5,000 mile trip in July pulling 10K so I should have some good numbers for mpg performance after that trip.

 

I went 247.3 miles 60-65 freeway put in 9.4 gallons topped off. This is my best mileage to date 26.3 mpg's.

Just installed the Snow mpg max kit. The 175ml on at three psi and max at 17 psi 625ml comes on 25 psi I used approx 4.5 gallons on this distance.

Running straight water. Best I got before the kit was 22.1, maybe I had a mean tail wind who knows don't really care I got 26.3 mpg in a 8000 pound pickup.

 

I'm feeling a bit stupid. Don't get the connection between H2O injection and better mileage? Maybe cooler denser air charge = better burn if overfueled??
Anyone?
EDIT: Just read Snow's speel on their MPG system. Injection gives "increases combustion efficiency". Interesting... Have to think about that.

RJ

 

Thanks rowj...

i know its very dynamic with boost numbers and such, but there must be a general guideline as to what size nozzle to start with..
I have a vari-cool also and notice very little results with EGTs, mostly use mine for decarbing, i run a high content of waste oil full time.... plus the waste oil results in higher egts as well... there is a lot going on i realize.

I downloaded the "devils own" calculator and that works pretty neat, but i wonder just how close it is. i think ill just go buy a bunch of nozzles and start playing around.

what size nozzles are you guys running on the pulls or 1/4 mile?

thanks, justin

 

I run 2 of Snow's.biggest nozzles. Their 625's! That's 625 ml/min at 40 psi...... 900 ml/min at 60 psi boost.
At WOT that's 1/4 gal/min... per nozzle.

RJ