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Old 02-15-2005, 03:36 AM   #1
Rickyh
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Default water injection is da bomb!

I installed a water injection kit that I got from coolingmist.com. Today I started doing a few wot runs and tuning for it a bit. I wish I would have done this sooner. with just a pressure switch set to start spraying at 10 psi, I am able to run 19 psi with the stock ic, with egts that max out at 720. I breifly tried 21 psi with an a/f of 11.8 and got no knock at all. I haven't touched timing or fuel yet. This is with a vf39 and sti pinks. I am not going to go for max power, but I like the safety aspect of it. I feel like I can get a really safe tune to where I can hammer on the car all day long. I can't wait until this weekend when I can really play with this. I am probably going to add a second injector and set it to start spraying at 4 or 5 psi.
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Old 02-15-2005, 05:16 AM   #2
icantdrive75
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Sounds exciting but I'm really uninformed. I know how it works, what it does, all that business...but for some reason I thought that putting water in your gas was bad. What's the pros/cons of this over alch. injection? Any place I can go so I don't have to bother you with q's?

-Danny
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Old 02-15-2005, 06:17 AM   #3
wrx plus
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I've been trying to tell people about w/i for years. Congrats on a good mod!!
<<<<<<<
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Old 02-15-2005, 07:16 AM   #4
Rickyh
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icantdrive, what it does is spray a really fine mist into the throttlebody. it cools the intake charge tremendously. it is almost like running race gas all the time. it makes the engine way, way more detonation resistant. as far as benefits over alky, it is probably the other way around. alky is a fuel so i believe it will make more power (don't quote me on that) coolingmist.com has a lot of info on water injection, as well as a whole variety of kits from 100 bux on up (I sound like a commercial now)
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Old 02-15-2005, 07:42 AM   #5
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imagine driving in a really cool humid day. After it rained cats and dogs and the temp drops to like 50 degrees.

That essential is water injection. water is a deterent to knock so therfor you can run more boost/timing with it...but there is a slight compromise. water also deters effective combustion..so you will compromise some hp to gain hp through other means. But WI is mostly a plus. ^_^
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Old 02-15-2005, 08:49 AM   #6
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so the coolingmist kit is high quality?
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Old 02-15-2005, 09:12 AM   #7
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awesome to hear such good words about the kit. i have the same kit (coolingmist.com), and it's been partially installed for the past few months... now, i need to get outside and hook it up

Rickyh: What are you using as a reservoir for the water? I would love to see some pics of your setup, too.
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Old 02-15-2005, 09:30 AM   #8
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I am using a 3 gallon fuel cell that I got off of ebay for 75 bux. It is exactly like the one in this link but it is red (click me for fuel cell) I have it strapped down in the trunk, with the pump mounted behind the back seat. Then it was simply a matter of routing the wires. I have a switch mounted near the ashtray to turno the whole setup off and on. the kit came with a pressure switch and a led that lights up when the pump starts spraying. I put the light next to the pullout cupholder. I would take pics, but I need a new cable to transfer em to my computer. My dog chewed my old one up. I am very pleased with the whole kit. It was very reasonably priced, has lots of options, and I emailed the guy several times with different questions and he was really quick with his replies.
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Old 02-15-2005, 10:24 AM   #9
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I'm putting the 1d Aquamist on my 2.5 hybrid. It is basically on / off over a certain boost. The next step is 2d? that is tied to the duty cycle. Or other.

Last edited by unkadave; 02-15-2005 at 06:50 PM.
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Old 02-15-2005, 11:26 AM   #10
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Quote:
Originally Posted by Rickyh
I am using a 3 gallon fuel cell that I got off of ebay for 75 bux. It is exactly like the one in this link but it is red (click me for fuel cell) I have it strapped down in the trunk, with the pump mounted behind the back seat. Then it was simply a matter of routing the wires. I have a switch mounted near the ashtray to turno the whole setup off and on. the kit came with a pressure switch and a led that lights up when the pump starts spraying. I put the light next to the pullout cupholder. I would take pics, but I need a new cable to transfer em to my computer. My dog chewed my old one up. I am very pleased with the whole kit. It was very reasonably priced, has lots of options, and I emailed the guy several times with different questions and he was really quick with his replies.
thanks for the info on the container.

did it come with the a pickup/fitting to flow the water to the pump or did you have to rig something separately? a fuel cell looks to be a great way to store the water, but i'm pretty unfamiliar with them.
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Old 02-15-2005, 11:39 AM   #11
Rickyh
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Default

when you buy it he will give you a choice of the fittings. two are some sort of AN fittings, the other is a 5/16ths push in fitting that is the perfect size. you just have to drill a hole in the top of the cell and push the fitting in. the fuel cell itself is made of a hard plastic. It is damn near impossible to break unless you beat it with a sledgehammer. I just got 4 eye hooks and two thick rubber straps with s hooks on em, and strapped it down in the passenger side of the trunk. it is easy to fill up cuz the opening in the top of the cell is almost big enough to put your fist in. 3 gallons is an awful lot of water. I figure it should last at least 3 weeks or so.
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Old 02-15-2005, 11:53 AM   #12
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awesome info.

now, i have to get the significant other to let me spend the funds...
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Old 02-15-2005, 11:53 AM   #13
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So with this there is no need for a IC sprayer then?
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Old 02-15-2005, 11:59 AM   #14
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RickyH,

Which of the kits did you get?
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Old 02-15-2005, 12:00 PM   #15
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IMO, 3 gallons is overkill (~18lbs of water weight) unless you're doing road racing or only want to refill it every 4 gas fillups or something. *shrug* Not looking to start an argument. Looks good!
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Old 02-15-2005, 12:24 PM   #16
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I have the snowperformance kit. Very good kit. Extremely high power pump, 200psi. I have the controller set for 7psi and 14psi. I used the stock windshield washer fluid tank. A float gauge has been inserted about 3/4 the way down and an quick-release fitting at the very bottom to feed the pump. The pump is mounted below the battery, upside-down, in the fender well. Pretty slick if you ask me. There are two LEDs (float gauge warning and pump activation) and an on/off switch mounted in the empty slot to the left of the dash cupholder.
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Old 02-15-2005, 01:08 PM   #17
Rickyh
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abi I got the deluxe single stage kit

jblaine it is rather a large amount of water, but I am paranoid that I will run
out. so I went a bit overboard


wcbjr I like the idea of a float to monitor the water level. I may try to rig
something up with a fuel gauge or something similar.
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Old 02-15-2005, 01:20 PM   #18
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Call up snowperformance.net and buy a gauge. Very simple to setup.

With a non 2d setup, you have to watch out for part-throttle full-boost situations. You will be spraying full water at non full load. You will misfire.
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Old 02-15-2005, 01:22 PM   #19
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I've been running WI on my wrx for over 2 years now. With an aquamist kit running a .8mm nozzle size I can go through 5+ tanks of fuel and not run out of water on a 1 gallon tank. This is with fast driving on hwy and streets. Any type of track use or road tuning will drastically change those numbers.
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Old 02-15-2005, 01:30 PM   #20
SleepinRex
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nice thread. Cali peeps should really look into this. wi is an affordable way to help counteract cali's piss punp gas
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Old 02-15-2005, 02:03 PM   #21
Rickyh
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wcbjr there is a slight hesitation sometimes when it first turns on. usually around 4500. I pretty sure I can tune around it. It really isn't bad at all. I don't think anyone else riding with me would be able to notice when it happens. It doesn't bog or lurch.
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Old 02-15-2005, 05:18 PM   #22
icantdrive75
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So you need EM for this to be effective.

And what it is is when the water turns to heat it absorbs alot of heat, reducing intake charge temps drastically and allowing for more boost. I'm not all the way stupid...just half stupid....on my moms side.
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Old 02-15-2005, 06:45 PM   #23
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I haven't put the setup on yet but here is some info. The thread assumes people are kind of familiar with it. But I got it in the stead of headers.

Water injection in proven power Jeff Sponaugle at pdx.

Aquamist system at pdxtuning

Catalog and prices
We have 92 Octane in OR, I got tired of putting in toluene, to protect against detonation.

I have UTEC on top of an EcuTek

Last edited by unkadave; 02-16-2005 at 07:59 AM.
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Old 02-15-2005, 11:31 PM   #24
4830DeuceWRX
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now you got me thinking about WI... ...making me spend even more money on my car with my broke college student budget....
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Old 02-16-2005, 02:12 AM   #25
AlucardR
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If I wanted to use WI with EcuTek EM how would that work?
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