We will be trying a 50/50 mix of methanol and distilled water. I think the % of alc in washer fluid is around 10%.

 

i think you are pretty correct there. the more alcohol could be better... but also remember that alcohol can dry up seals, and rubber components.....

never experimented with more alcohol, but it should work better than just water. (hence why you add alcohol in the first place), and you are going closer to pure alcohol injection.

 

Did a quick search and found this. I didnt know they cost this much?!

http://www.wrxevolution.com/alcoholinjection.asp

 

uh huh....

but it is worth it

 

7-10 grand for a TT and the install... $600 is pretty cheap insurance.

If your gonna play, you gots to pay...

 

Aquamist makes some very nice products, especially the high end stuff, but they are very expensive and the pumps are renowned for failing. I know of a good quality kit that will be available shortly that should start around $299.

 

If you live in a hard water area, running distilled or flitered water is a very good idea. Here in NorCal the water is mega-hard and leaves calcium deposits very quickly. I use softened and five stage filter water from my special kitchen tap.

 

True. But for that kind of money, would it be better to get a NOS intercooler spray? for the FI people that is.

 

Not really a good comparo.
I "use" the benefts of WI almost daily on my street driven SC'd truck.
I do not see the NOS intercooler sprayer as a "daily contribtor"
It's more for bling and dragstrip adder.

 

yes and no... i wa going to add an IC sprayer to the heat exchanger of my A/W IC (black one), and to the actual intercooler of the A/A IC (red one), but never got around to it.

they both have their advantages. i never had one fail, and my water wasn't all that hard, (I used bottled water for the most part). the WI is cheaper to refill, and great for longer track days for this reason. the intercooler sprayer has really just become a bigger deal in the last year or two. The STI comes with one, but it is only water, which will help cool down the IC (basically like putting bags of ice on you IC and pipes more or less)

the NX Ntercooler sprayer has seen some pretty good results that are rather impressive. I think if you can afford a Z, and a TT kit, both water injection and the intercooler sprayer (either just with water, or the nitrous one) would be a very good idea for saftey reasons, especially if you do a lot of track events/ back to back drag runs. if you start seeing the intake temps/ exhaust temps rise hit it with the sprayer.

i had gauges to keep track of the pre-intercooler temp and the post IC/WI temp (right before the throttle body). also EGT gauges.. there are a few times i wish i could have cooled it down a little bit.. (my heat exchanger for the A/W IC was about 2'x1', wish i had made it larger)

 

I agree 100% with this.

unless you have the intercooler sprayer set up on a window switch so it will turn on at a certain boost level or RPM, you will not see the day-to-day benefits that you will from WI

 

How much is it going to cost you to fill the NOS bottle? Water is free. It won't take much time to make up the difference in cost vs a water injection system.

Isn't the IC sprayer a manual switch? Water injection is always there. You don't have to think about it (except when the water level gets low).

 

mine took a refill about every tank of gas..... so i would get gas and refill the tank.. i had a tank from Jeg's (black gas tank, mounted in the trunk, had in/out ports)

let me see if i can find the picture......

 

Spraying N2O on the IC is a dry shot, pure and simple. Try it on a dyno and watch the N2O stream straight into the intake(s). The horsepower gains due to chilling the IC are minimal at best unless your IC is completely overworked.

WI has many more positive effects than just cooling the intake air. Here is an excellent paper regarding the actual physics of WI: http://www.aquamist.co.uk/info/docum...aper/title.htm

 

here basically like this one, but only with one out port. 3 gallons by the way

 

Here are a couple pics of the install. I considered a similar reservoir from Jegs but decided to go with the stock washer fluid reservoir for a cleaner install and because it has a built in low fluid indicator. Also it holds at least 1 1/2 gallons.

From the source



To the destination

 

Good point. I didnt think of that. Any dyno numbers with the mist system?


I see red "x"s ?

 

The dyno numbers on base APS 8.5 PSI were the same with and without WI. Water itself is not a power adder, it is the ability to raise boost and advance timing with WI that will create power gains.

Without raising the boost or advancing the timing, WI essentially just cools the charge air and cylender temps as well as raiseing the octane level.

 

Would WI prevent the engine from getting heat soak quicker (therefore it may be good for those who like to drag race and make 4-8 runs)?

 

it will not change the temperature of the air coming out of the intercooler (or cool the intercooler), but it will cool the air prior to entering the throttle body.

so the answer is no. it will not help the heat soak of the intercooler. the only reason why you lose power on heat soak is the increase of the charged air temperature. this is what WI will help. so regardless of a heat soaked IC or not, your charged air will be cooler with WI than without.

that make any sense? i could draw a better diagram if i could.....


basically turbo--> IC-->WI--> Throttle body
.........................................^ right there you want the coolest air possible.