PorschePhD

For those that have been following we(ImagineAuto) and Heibar have been trying to finish up development on a water injection system for the 996TT. I have spent a great deal of time trying to finish the "Y" pressure pipe which has proven to be a real pain in the rear. We will offer the pipe on an exchange basis. This will allow a smooth and quick install. The pictures below are the main pipe installed showing the sensor moved to the rear and the map sensor with a bracket in its original spot. The other two pictures are the injectors in the neck on the left and right side. The last is the actual water tank. I have been taking lots of photos for a nice manual on the install.
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msindi

Pardon my ignorance but what does this system actually do??

rutz964C4

Stephen

Have you already made a test drive? <img border="0" alt="[burnout]" title="" src="graemlins/burnout.gif" />

<img border="0" alt="[cheers]" title="" src="graemlins/beerchug.gif" />

ALEX

HBdirtbag

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by msindi:
<strong>Pardon my ignorance but what does this system actually do??</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">It will spray water on the intercooler giving it a cooler charge. It'll be really effective on the track or on hot days.

Oak

This system is designed to inject water into the intakes/combustion chambers. Water injection has been around for decades, I remember my grandfather used to use it on his farm tractors.

Helps cool down intake temps and keep preignition/detonation in check. Also helps keep the combustion chambers clean of carbon.

Stephan, Do you think it's a worth while mod? What kind of HP/tq figures would you gain?

HBdirtbag

ah, i figured it was just an intercooler spray

PorschePhD

Oak,
I am not sure what the gains will be. The work on the 930 netted about 30 HP and 60Tq increase. This was on a near stock car. For a car that is near its limit the ideal is the WI will increase the volumetric efficiency, remove hot spots and burn cleaner. What should happen is systems that were rated for 97 octane could be run on 91 or 93 with this system. It is an expensive insurance policy, but the alternative is even more.

I have had it running and all is good so far. We are trying to dial it in so that it is a plug and play kit. <img border="0" alt="[burnout]" title="" src="graemlins/burnout.gif" />

HBdirtbag

I've never heard of such a thing. Can you guys explain to me how it works. I got the idea, but what are the specifics.

PorschePhD

From Heibar </font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica"> Concept: Introducing a modest amount of finely vaporized water into the intake dramatically lowers intake temperatures, thereby causing an increase in power output of the combustion cycle. Water injection also maximizes engine performance, increases volumetric efficiency and suppresses detonation. Because water absorbs large amounts of heat, a proper mixture of water controls the combustion of the air/fuel mixture, providing a smoother, prolonged burn, similar to the slower burn cycle of high-octane fuels.
</font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">They said it better than I could.

Zippy

Here's a link to <a href="http://www.carrollsupercharging.com/GI.html" target="_blank">Carroll Supercharging</a>. They have a detailed explanation of "Gaseous Intercooling".

PHD, are you running straight water or a water / methanol blend? I have been using a 60/40 water/methanol blend in my Suburban for over a year with no problems.

Mike

msindi

When will this be available and for how much??

johnfm

Stephen

I expect the real benefit, as you touch on, is not 'extra' HP, but an ability to run lower octane 'gas', though I thought the great thing about WI was that it allows a bit more boost to be run without pre-detonation etc & more boost gives the extra HP.

Ruiner

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by johnfm:
<strong>Stephen

I expect the real benefit, as you touch on, is not 'extra' HP, but an ability to run lower octane 'gas', though I thought the great thing about WI was that it allows a bit more boost to be run without pre-detonation etc & more boost gives the extra HP.</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Correct. Although I would mix in a bit of alcohol as well and not just run pure water. This is a common trick that has been done for years in the Japanese turbo market. We also used propane injection which increases the octane rating in the same manner. Most agree that Alcohol injection raises the effective octane rating to between 100 and 108 octane when atomizing properly.

Sameer

Is there any downside to this? Can the engine internals take this in the long run?

PorschePhD

Actually you can run washer fluid which 20% methanol/distilled water. The benefit is it has an octane rating of about 113. Keep in mind that anything above 50% methanol will create hotter temps in the combustion chamber not cooler. We have also found that straight distilled water actually still works better than Methanol water blend. I am sure a few are questioning the washer fluid. It is fine to use, the coloring doesn't hurt anything and it normally carries about 5% detergent which certainly will not hurt anything. The washer fluid should be used in the winter. From a longevity point of view this should aid in the process and will keep emissions down and carbon build up gone. There are really no down falls to the theory except it is another tank you must fill and you have to use distilled water to keep deposits out. I pay about .79 a gallon. Less than 5.00 a fill. Your motor can utilize the water as long as it is in a controlled amount. Your car now is use to having water in it, ehhh you say? Sure, for every gallon of gas you burn you create a gallon of water. Most of you will notice this on start up since the exhaust isn't hot enough to evaporate it before it hits the tail pipe. Your motor is also use to driving through water, the humidity in the air, rain storms, car washes etc. It still is sucking water in and is not a problem. The cars are use to it. The best part about this is those that have programs for 100 octane can now run pup gas or those that have 91 octane programs can run 93/94 octane programs. It doesn't make since for you CA guys with the 91 max octane to run 100 octane all the time to have a better program. If you get stuck in the middle of no where with 93-100 then you are in trouble. Not practical, water is. Like running a higher octane you can run a higher boost level with the water if all variables stay the same except boost.

The cost will vary depending on HP application and need. The kits can run up to 3150 and as low as 2250.00. They will be a do it yourselfer 2-4 install. The procedures I am writing out are of course based on my install on my car so you know it will work/fit.
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