Whitelightning Posted October 13, 2004 Share Posted October 13, 2004 I am researching a water injection system. Has anyone done this ? I realise the Aquamist system is a market leader. Has anyone got the ECU controlled 2C system ? Did it plug into your existing ECU/after market ECU ok ? What real results did you get using this ? I know Paul at whiffbits has one on his Supra - any comments Paul ? Quote Link to comment Share on other sites More sharing options...
Alex Posted October 13, 2004 Share Posted October 13, 2004 I had it one mine...its a nice safeguard against det - but not a cure. I rate the system a few people have had pump failure's but I didn't. All in they are a worthwhile addition. Quote Link to comment Share on other sites More sharing options...
Whitelightning Posted October 14, 2004 Author Share Posted October 14, 2004 Did you get the Aquamist ? Im looking at the System 2C to plug into an Autronic SM2. Quote Link to comment Share on other sites More sharing options...
Alex Posted October 14, 2004 Share Posted October 14, 2004 Yes it was an aquamist but it was just the standard system which kicks in at .8bar. It was suplied by Chris Wilson from this BBS...do a search for his name. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted October 14, 2004 Share Posted October 14, 2004 IMO there is absolutely no need fopr a mapped system. How would you map it anyway? There's no way you could map it on the road or rollers, something like WI mapping needs to be done on a proper engine dyno where other temp issues can be totally controlled. Mapped WI is really strictly full race engine territory run to the very limit. I can sell you a mappable system, as i can any Aquamist product, i just don't think you need it The basic 1s system run off the supplied pressure switch, which I usually set at 10 psi, should be totally adequate. Below is a short article I wrote last year on WI, it may be of some interest. I can do you an excellent price on Aquamist WI if you decide that's what you want. Cheers. Water injection serves 2 closely related functions on a turbo engined car. Firstly it cools the charge air temperature by utilising an effect known as the latent heat of evaporation. This property can be self demonstrated very easily. If you pour something that evaporates quickly like petrol on your hand it feels very cold. This is the rapidly vaporising spirit removing heat from your skin and bloodstream by the aforementioned process. By spraying a very finely atomised mist of water into the inlet of a turbo engine when under boost conditions the evaporation of the water into steam causes a temperature reduction in the air and fuel intake charge. A cold charge is less likely to be subject to detonation than a hot charge. A cool charge is also denser, able to carry more air and fuel mix per unit of volume. These 2 properties of water injection allow either less chance of detonation at a given boost, maybe allowing lower octane fuel to be used, or to allow a rise in boost pressure usage without detonation. These are very desirable goals for any modifier of a turbo engine, or one using an engine mapped to run on a higher octane fuel than generally available in the UK. Japanese import turbo cars for example. People ask whether squirting water into an engine causes corrosion. In fact this is not a problem, the combustion temperatures under boost ensure the water is turned instantly to steam and is ejected out of the exhaust. The water mist is injected only when high boost is sensed via a supplied pressure sensor switch. The basic combustion process of hydrocarbon fuels causes LOTS of water to be generated anyway, which is why cars not driven on regular long journeys will rust out a mild steel exhaust system from the INSIDE out. If water is added in the correct volume, via the supplied, calibrated jets, this is not a problem. Even when used alongside a larger or more efficient intercooler, or indeed when an intercooler is used in an application where one was not present as standard, water injection can and does increase charge cooling still further. Water can be stored either in the existing windscreen washer bottle or in a separate, dedicated, container. In cold conditions it is essential to add an anti freeze additive to the water to stop pump damage through freezing. Windscreen washer additive serves this purpose fine and the engine won't mind ingesting this solution at all. Or you can add neat methanol, which is usually the anti freeze additive in washer fluid anyway. Using a 50 / 50 percent by volume water / methanol mix will actually help increase the octane of the intake charge, as an added benefit. As a yet further advantage the latent heat of evaporation of methanol is extremely high. A win / win situation. It is not however obligatory to use methanol as an additive. All components of the water injection kit that are in contact with the fluid are stainless steel or able to tolerate water and methanol or screen washer additive without degradation. A properly set up system does not use a vast amount of water, in fact a modern car sized screen washer bottle used also for the water injection reservoir will suffice admirably. A water filter is included to keep any sludge out of the pump or jet. This should be checked regularly for contamination and blown out if residue is apparent within. Quote Link to comment Share on other sites More sharing options...
Wez Posted October 14, 2004 Share Posted October 14, 2004 Hey Chris, If you have a mappable ECU like the AEM you could setup another map that runs closer to 12.5afr when the WI is activated, this could be done automatically or with a manual switch. I know that if the pump failed or you ran out of water the AEM would need to sense this and go back to the normal map which is shouldn`t be difficult to setup, you could also get it to monitor switch on IAT and EGT as well. Surely running 12.5 instead of 11.5 should release some nice power or is it minimal? Quote Link to comment Share on other sites More sharing options...
MONKEYmark Posted October 14, 2004 Share Posted October 14, 2004 i have it on mine fitted by chris, its an extra bit of safety. going to have a methanol tank on mine rather than just washer jet water. worth it for peace of mind the one you want seems a bit ott. you could also run with better fuel if you racing. aquamist is not that expensive to buy. Quote Link to comment Share on other sites More sharing options...
Whitelightning Posted October 14, 2004 Author Share Posted October 14, 2004 Chris - i sent you an email. Many thx for the advice. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted October 14, 2004 Share Posted October 14, 2004 Originally posted by Whitelightning Chris - i sent you an email. Many thx for the advice. Received and replied to, cheers. Quote Link to comment Share on other sites More sharing options...
Markie Posted April 16, 2005 Share Posted April 16, 2005 erm, just been told by someone in work about this system... I thought they were on about the water spray system like some of the Imprezas have where water is sprayed onto the intercooler. I can't belive this system injects water into the engine, surely this is the one thing you never want to do with any engine. I always thought - Water in engine = Engine going to go bye bye's. You guys really think its a good mod to do? Quote Link to comment Share on other sites More sharing options...
Vaughany Posted April 16, 2005 Share Posted April 16, 2005 Whitelightning and anyone else who is interested, check out the following link http://www.waterinjection.info/phpBB2/ This will take you to Waterinjection Forum where they discuss all the systems including all the ERL Kits. You may be surprised but they are doing some wicked stuff with the kits and it has definitely helped me to get the best out of my system 1 Kit Cheers Quote Link to comment Share on other sites More sharing options...
Markie Posted April 16, 2005 Share Posted April 16, 2005 I think I am going to get a decent aftermarket IC spray kit now. This should also help with the engine temp I would of thought, plus, it will help increase performance as it will provide the IC with more cooling effect, therefore, condensing the air more. Anyone fitted one of these yet? Quote Link to comment Share on other sites More sharing options...
b_have Posted April 16, 2005 Share Posted April 16, 2005 Had my ERL system on for almost 6 years now, good bit of kit. Run it on 70/30 Meth /water from a dedicated tank @ >1.1bar. Quote Link to comment Share on other sites More sharing options...
JohnA Posted April 17, 2005 Share Posted April 17, 2005 I've also experimented with W.I. a wee bit (not on the Supra yet though) Tried different nozzles, mixtures, locations, orientations, if you can imagine it I've probably tried it. Hell, even tried nitromethane for a short while before it went kaboom, lol... Quote Link to comment Share on other sites More sharing options...
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