I am interested in assembling an Aquamist WI setup for my car to keep things nice and cool, but I am somewhat intimidated by the ECU requirements of such a system (I would want a mappable solution, not a simple "on/off" switch). I recently learned that you can use the UTEC boost control map to create a WI map, using the load/RPM sites to control injection. This of course is only conceivable if you use an auxiliary boost control source, such as my HKS EVC (boost control is therefore not UTEC dependant). Does anyone have any idea how to do this or any starting points for how to get something like this rolling? I know this sounds a little far fetched, but I'd like to use the Aquamist 2c system, but if anyone has any feasible recommendations that would alleviate the aforementioned complications, any input would help.

Thanks a lot in advance,

~Tim

The UTEC can control the WI all by itself....why do you think you need an aux boost control source???

The UTEC can control the WI all by itself....why do you think you need an aux boost control source???

I was told that if you used the boost map for WI control, that you would need a boost controller to handle boost since the UTEC map that ordinarily assigns duty cycles is occupied by WI.

Are you saying that there is already a function in the utec that controls WI? If so...does anyone have any useful info?

~Tim

The utec can controll it with the extra selioniod feature, or what ever they call it. You set the perameters for when it will come on, but wont be used the boost map. I wouldn't know how to go about setting it up to run off the boost map.

The UTEC can be set to fire the solenoid at and above a particular MAP...there are all sorts of variables that can be set to fire the extra solenoid switch...read the ...... manual...;) it's in there....

The UTEC can be set to fire the solenoid at and above a particular MAP...there are all sorts of variables that can be set to fire the extra solenoid switch...read the ...... manual...;) it's in there....


Once the solenoid is tripped (at certain MAP) does anyone know if the WI can then be mapped to the increasing boost and RPM requirments so it's not just a static flow? These may sound like stupid questions, but I've never gotten a 100% perfect answer.

~Tim

You guys are talking two different things.
You can use the Utec spare solinoid signal to trigger the on/off parameters for when you want to spray (boost, load, RPM...).

TurboXS has a software change that allows you to take the wastegate solenoid duty cycle signal to pulse the Aquamist High Speed Valve and get a scaleable water delivery. If you go this route, then you will need to get an EBC or something to map their boost.

If you want more, search in EM for water injection.
Good link here (http://forums.nasioc.com/forums/showthread.php?t=474069&highlight=boost+injection)

essentially, the hack/patch changes the x axis for the old "boost map" from tps to load, just like the other maps (fuel, ign.).

then you can map them much easier since you are in the same load "cell."

obviously there is no closed control loop in the setup.. it's "open loop" straight duty cycle adjustments.

finally in order for the circuit to be active you must satisfy the spare solenoid parameters.

....aaaaahhhhhh.....got it...;)

I was told that if you used the boost map for WI control, that you would need a boost controller to handle boost since the UTEC map that ordinarily assigns duty cycles is occupied by WI.

Are you saying that there is already a function in the utec that controls WI? If so...does anyone have any useful info?

~Tim

Aquamist has a system called 2d. It mirrors your fuel injector's duty cycle as well as an in-build "system fault" diagnostics circuitry when water pressure is lost or water jet is blocked.

If your priming aim is to lean some fuel to increase power, the 2d is perfect for the application and at the same time it will free-up a channel to control your boost.

If the Utec has a spare "gerenal purpose input" channel, the 2d can communicate with it and cut boost, change map, etc to you can run your engine with WI safely.

TurboXS are you listening?
I asked them about getting the code that changes the boost map from tps to map. No go they will only release it to special people.

TMS

TurboXS are you listening?
I asked them about getting the code that changes the boost map from tps to map. No go they will only release it to special people.

TMS
if you arent "special" I dont know what is :lol: :lol: :lol:
http://www.originalicons.com/buddyicons/Crank.Yankers/6.gif

Timdog1650- the aquamist 2d system, as peater head indicated, comes with a device called an FIA (fuel injector amplifier) that mirrors the IDC of injector #1, note that the 2d also comes with the race pump which is nice, not sure if you get that w/ the 2c. The aquamist 2d also comes with a mech. switch that you can set to activate the w/i at a certian boost pressure (factory set at 10psi). You will need to set your UTEC's spare solonoid to activate and deactivate based on RPM, mine's set at 3000rpm, yours may need to be set at a different RPM to prevent knock.

Kent

Check out http://www.waterinjection.info/phpBB2/ there are a host of people on there that are working with the same issues. You can also correspond directly with Richard Lamb at Aquimist who monitors that site, and get factory direct info and useful system layout tips etc.

Larry

Aquamist has a system called 2d. It mirrors your fuel injector's duty cycle as well as an in-build "system fault" diagnostics circuitry when water pressure is lost or water jet is blocked.

If your priming aim is to lean some fuel to increase power, the 2d is perfect for the application and at the same time it will free-up a channel to control your boost.

If the Utec has a spare "gerenal purpose input" channel, the 2d can communicate with it and cut boost, change map, etc to you can run your engine with WI safely.

That system is nice but when you install bigger injectors and/or start pulling fuel guess what, you start pulling water too.

CMJ- How do you figure that? I have the 2d and the utec, the amount of water is controlled by the size of the jet and it fires at the same time as the #1 cyl, the size of the injectors or pulling fuel from your fuel map has nothing to do with it. The FIA is a fuel injector amplifier, ie it takes the signal from the fuel injector and mirrors it to inject water using the HSV. Note; the spare solonoid in the UTEC is a simple on/off affair that can be based on a number of parameters.

Kent

That system is nice but when you install bigger injectors and/or start pulling fuel guess what, you start pulling water too.

I think when larger injectors are used, you can put a bigger water jet or two on the 2d to compensate the new low IDC. I am not sure if the new IDC will not drop as much as 50%, but you can sure use two jets to compensate if that is the case.

CMJ- How do you figure that? I have the 2d and the utec, the amount of water is controlled by the size of the jet and it fires at the same time as the #1 cyl, the size of the injectors or pulling fuel from your fuel map has nothing to do with it. The FIA is a fuel injector amplifier, ie it takes the signal from the fuel injector and mirrors it to inject water using the HSV. Note; the spare solonoid in the UTEC is a simple on/off affair that can be based on a number of parameters.

Kent

The 2d mirrors the injector pulses, more pulses = higher idc = more fuel and more water. In the upper rpm ranges when you can really lean out the afr you end up with less water when in fact you want more water and less fuel.
The 2d system is MUCH MUCH beter than a static system but is not a true mapable setup.

HHHmmmm I did say the amount of water is controlled by the size of the jets.
You are right ofcourse the 2d is NOT a true mappable setup, but it's as close as I can afford to get to having one. Aquamist does have a mappable w/i system but cost and lack of my own programming knowledge puts that out of my reach. ( I get a headache just tuning with the UTEC. LOL!)

Kent