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Old 12-26-2007, 01:56 AM   #26
poopy
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is there a system i could turn off from within the car? with the new Si drive, i could say run WI in 1 mode and a non WI map in another mode. if a problem arrived, turn the system off from within the car and changes maps wi the Si drive. this is basically what i am looking for in a WI system.

thanx, mike
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Old 12-26-2007, 07:59 AM   #27
Coolingmist
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Any of our kits that have our Smart Injection unit have the ability to turn on/off any device including a water injection kit. To switch MAPS if that is simply sending a 12V, Ground or 0-5V, our system can do that. We have 5 outputs that can be used for things like this.
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Old 03-11-2008, 11:43 AM   #28
ktm
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You forgot one big player in the meth injection scene that has a great standalone and utilizes a HSV: FJO Racing www.fjoracing.com
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Old 03-11-2008, 04:00 PM   #29
WReXd
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I apologize, I don't think I've heard of Fjo before. Looks like they have some pretty cool stuff. Their controller can do a lot, and their HSV is affordable. Original post is updated, with a question for Coolingmist (Look for red font).
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Old 03-11-2008, 04:27 PM   #30
Coolingmist
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Quote:
Originally Posted by WReXd View Post
EDIT: I'm not sure Coolingmist's hsv works the way I thought. After doing some reading, it seems to me like their valve may be a proportional valve (works sort of like a variable restrictor) instead of a high-speed on/off valve. Maybe Coolingmist will chime in.
You can run this valve several different ways, its easily one of the most flexible valves on the market.

Option #1 is you can PWM the valve with a fixed frequency, increased current=increased flow. You can think of this as dutycycle based. This is identical to they way most progressive controllers PWM a pump except the valve is much faster, hence high speed. The term high speed refers to the fact that it can change the flow rate, very, very fast with low hysterisis.


You can use a 0-5V. Your 0-5V signal MUST be able to produce 5 Watts at 5V. This can work using NO frequency at all. No PWM signal. 5 volts means it opens all the way, 0 volts=closed, the orifice opening will be relational to the voltage. This is a very fast way to work the valve and the valve will not buzz like a bumble bee. If your circuit cannot handle 5 W at 5 volts you need a driver board (we can supply them for you). This driver board will take your 0-5V signal and amplify it.


You can increase the ontime of the valve and run it dutycycle wise. for example.

at 1000 HZ you can run 5 volts for 1/2 ms, go to 0 for 1/2 ms to obtain 50% dutycycle.

Program your circuit for how you want it to work.

We have this working on a Haltech as low as 30 HZ. Its max frequency is 15,000 HZ

David

Last edited by Coolingmist; 03-11-2008 at 04:50 PM.
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Old 03-12-2008, 03:04 PM   #31
ktm
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They call it a water injection system, but the pump is 100% methanol compatible. I am running the HSV and pump on my 240z build and controlling it via PWM with my engine management system (Wolf V500).
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Old 07-17-2008, 03:22 PM   #32
IvanWRX
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Hi, I'm using an AEM kit (trunk mounted) and I'm having horrible lag issues with it . I don't know if it is a controller or pump problem. Any thoughts? Thanks.
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Old 07-18-2008, 12:21 AM   #33
WReXd
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By "lag issues," do you mean the pump takes too long to reach peak pressure? I don't understand.
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Old 07-18-2008, 06:50 AM   #34
DonkeyPunch
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Sticky this mods.
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Old 07-06-2012, 06:33 AM   #35
enjoilife1991
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i like. very informative
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Old 07-31-2018, 04:01 PM   #36
Masuoka
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Hello guys,

I'm building my next rally car and it's time for me to choose a water injection system but I don't know what input is better for my application : IDC or MAP

It's a Peugeot with a 1600 thp engine and direct injection.

The car will make about 280 hp with a 34 mm air restrictor. With this restrictor, the engine will reach its max boost pressure just before 3000RPM, the pressure (and the torque) will then decrease until 6500RPM.

The goal is to have max power from 3000 to 6000 RPM.

If I'm right, IDC will approximately be the same at 3000rpm with max boost pressure and at 6000rpm (low boost and maybe no water injection needed at this point).

From what I think, MAP based injection seems to be more suited for my application.

Am I right ? If not, could you please explain me ?

Many thx guys !
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