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[Eggylshatch]

So for my next round at boost (in the further than nearer future) I want to run water/methanol injection, but And because I'm an intellectual being,  an intercooler, so I want progressive control.  The cheapest individual controller sold commercially that I've seen is $155 from Devil's own.  It seems like a pretty simple thing (and should be cheap to make)... I think they just control the voltage going to the pump depending on the map sensor voltage and where you set it.  Has anyone made one before?  I have very little electrical experience, but I'm not dumb and am quite determined.  If someone could point me in the direction of some good information to get me a crackin, maybe a good source for parts, please do so. 

I'm also open to being spoon-fed everything, but willing to do it myself, just need some direction in the electronics world.
FEEED ME.

I'm asking now b/c I might by the used kit for sale here, but if not, I'll buy another used one or build my own.

[patsmx5]

If you google it, I've seen a schematic of the controller like a devils own, and you can DIY.

[Joseph Davis]

http://myo-p.com/WI-project.htm

[Eggylshatch]

If you google it, I've seen a schematic of the controller like a devils own, and you can DIY.

I looked a bit before, and more after you said this, but no findey.

http://myo-p.com/WI-project.htm

Thanks JDizzle, probably a bit more complex than I need, but good knowledgabilities.  Perhaps I can pick out what I need from it.

[Joseph Davis]

OK

[Ntrain2k]

If you are looking for something like a standard fuel injector, perhaps one off of one of the flex fuel vehicles would work?

I seem to recall something about them being made differently because of the high ethanol content being corrosive or something.

[patsmx5]

http://www.lovehorsepower.com/MR2_Docs/water_injection_controller.htm

[Joseph Davis]

If you are looking for something like a standard fuel injector, perhaps one off of one of the flex fuel vehicles would work?

I seem to recall something about them being made differently because of the high ethanol content being corrosive or something.

Alcohol's corrosiveness to stainless is different from water's.  You can use 20 year old shit injectors, I just recommend newer pencil style as they deal with higher pressure and atomize better.

[Minor Threat]

http://myo-p.com/WI-project.htm

I got him to send me a kit to test, I still need to buy a pump to use it with.

[Joseph Davis]

http://myo-p.com/WI-project.htm

I got him to send me a kit to test, I still need to buy a pump to use it with.

Junkyard fuel pump plz.

[Minor Threat]

Junkyard fuel pump plz.

He sent me one of these http://www.myo-p.com/PWM-1.htm

Just use my old fuel pump or something?

[Joseph Davis]

I would!

[Minor Threat]

Fuck ya, I like that idea better.

[Kain]

i have a meth injection setup in my car.


you dont even need any of that shit.

the most reliable unit is a boost reference hose going to a bottle, and out of that bottle comes a hose with the injector on it. so depending on boost pressure, it will inject a certain amount.

also, go pre turbo. makes the biggest difference.

also get a fast acting IAT sensor.

[Joseph Davis]

Kain, fail.

[Robb]

i have a meth injection setup in my car.


you dont even need any of that shit.

the most reliable unit is a boost reference hose going to a bottle, and out of that bottle comes a hose with the injector on it. so depending on boost pressure, it will inject a certain amount.

also, go pre turbo. makes the biggest difference.

also get a fast acting IAT sensor.

You have a car?

[Joseph Davis]

i have a meth injection setup in my car.


you dont even need any of that shit.

the most reliable unit is a boost reference hose going to a bottle, and out of that bottle comes a hose with the injector on it. so depending on boost pressure, it will inject a certain amount.

also, go pre turbo. makes the biggest difference.

also get a fast acting IAT sensor.

Okay, now that I'm off my phone and it's not a pain in the ass to type.

Kain, water is heavier and less willing to atomize than gasoline is.  That shit doesn't work for gasoline, it REALLY DOESN'T WORK for water.  Just like fuel fall out sucked a big one on inline 6-8 cylinder motors, trying to do less than port injection with water results in a lot of fail.   Maybe the dual in design of a Rotory minimizes this, but for ANY piston application a single sprayer nozzle water injection setup is fucking crap, and anyone running one a fucking fool.

[Kain]

i dont understand what you're talking about jd?

i never mentioned anything about water?

[Kain]

i have a meth injection setup in my car.


you dont even need any of that shit.

the most reliable unit is a boost reference hose going to a bottle, and out of that bottle comes a hose with the injector on it. so depending on boost pressure, it will inject a certain amount.

also, go pre turbo. makes the biggest difference.

also get a fast acting IAT sensor.

You have a car?

yes i have a fucking car. jesus christ, i even have two.

[Joseph Davis]

i dont understand what you're talking about jd?

i never mentioned anything about water?

Heavier than air fluid, same principle.

[Joseph Davis]

Inject it pre turbo and let the compressor do the chopping 

What does that have to do with fall out?

If carbs > any type of EFI except 500 bar line pressure direct injection for atomisation, yet fall out was a big concern on inline 6+ cylinder engines to the point the furthest cylinders were lean and ran hot.  That's a foot to either side of a carb.  How are you going to avoid it with a couple feet of charge pipe, IC, etc?

Bottom line: crap.

[Eggylshatch]

Does the boost referencing of the water/meth system work well?  Like does it make that much of a difference if the pump is already at or above 80 psi?

And also, How would you recommend placing the water/meth injectors JD? right behind the fuel injectors?  I'm guessing they would need to be placed at an angle toward the head also?

[Robb]

Does the boost referencing of the water/meth system work well?  Like does it make that much of a difference if the pump is already at or above 80 psi?

And also, How would you recommend placing the water/meth injectors JD? right behind the fuel injectors?  I'm guessing they would need to be placed at an angle toward the head also?

No, not at all, and depends on your manifold design.

[Kain]

Does the boost referencing of the water/meth system work well?  Like does it make that much of a difference if the pump is already at or above 80 psi?

And also, How would you recommend placing the water/meth injectors JD? right behind the fuel injectors?  I'm guessing they would need to be placed at an angle toward the head also?

No, not at all, and depends on your manifold design.

us rx7 guys have it easy, its all equally distributed so we just put it pre turbo.

[Robb]

Does the boost referencing of the water/meth system work well?  Like does it make that much of a difference if the pump is already at or above 80 psi?

And also, How would you recommend placing the water/meth injectors JD? right behind the fuel injectors?  I'm guessing they would need to be placed at an angle toward the head also?

No, not at all, and depends on your manifold design.

us rx7 guys have it easy, its all equally distributed so we just put it pre turbo.

That is possibly the dumbest thing Ive ever seen you type.  Seriously.

Anybody can put it pre-turbo.  It has nothing to do with the distribution at that point.  You want port injection, not destroy-my-compressor-blades-with-water-particles-injection.

JD was pointing out the fact that 13b's only have 2 runners, so a single jet wont hurt distribution as it would in four runners.  You took what he said and ran off in left field with it. Damn dude.

[Eggylshatch]

Does the boost referencing of the water/meth system work well?  Like does it make that much of a difference if the pump is already at or above 80 psi?

And also, How would you recommend placing the water/meth injectors JD? right behind the fuel injectors?  I'm guessing they would need to be placed at an angle toward the head also?

No, not at all, and depends on your manifold design.

us rx7 guys have it easy, its all equally distributed so we just put it pre turbo.

I'm fairly certain there is a general consensus stipulating that pre-turbo injection is retarded.

[Eggylshatch]

Does the boost referencing of the water/meth system work well?  Like does it make that much of a difference if the pump is already at or above 80 psi?

And also, How would you recommend placing the water/meth injectors JD? right behind the fuel injectors?  I'm guessing they would need to be placed at an angle toward the head also?

No, not at all, and depends on your manifold design.

I doubt the time/money will ever visit me that I'll have a custom intake manifold, so it would just be a stock b18b intake mani.  I would assume I would need to have angled bungs welded on for clearance and atomization/so there isn't pooling of water from spraying straight at the opposite wall.  But I don't know much of these dynamics, maybe it wouldn't matter with the amount of air/ velocity of a boosted engine

[Joseph Davis]

Does the boost referencing of the water/meth system work well?  Like does it make that much of a difference if the pump is already at or above 80 psi?

And also, How would you recommend placing the water/meth injectors JD? right behind the fuel injectors?  I'm guessing they would need to be placed at an angle toward the head also?

No, not at all, and depends on your manifold design.

us rx7 guys have it easy, its all equally distributed so we just put it pre turbo.

I'm fairly certain there is a general consensus stipulating that pre-turbo injection is retarded.

Which is why it's a recurring theme in the rotary world of infallible factory engineering.

[Kain]

Does the boost referencing of the water/meth system work well?  Like does it make that much of a difference if the pump is already at or above 80 psi?

And also, How would you recommend placing the water/meth injectors JD? right behind the fuel injectors?  I'm guessing they would need to be placed at an angle toward the head also?

No, not at all, and depends on your manifold design.

us rx7 guys have it easy, its all equally distributed so we just put it pre turbo.

I'm fairly certain there is a general consensus stipulating that pre-turbo injection is retarded.

Which is why it's a recurring theme in the rotary world of infallible factory engineering.

heh

19 gph jet right on the turbo inlet.

[Eggylshatch]

Does the boost referencing of the water/meth system work well?  Like does it make that much of a difference if the pump is already at or above 80 psi?

And also, How would you recommend placing the water/meth injectors JD? right behind the fuel injectors?  I'm guessing they would need to be placed at an angle toward the head also?

No, not at all, and depends on your manifold design.

us rx7 guys have it easy, its all equally distributed so we just put it pre turbo.

I'm fairly certain there is a general consensus stipulating that pre-turbo injection is retarded.

Which is why it's a recurring theme in the rotary world of infallible factory engineering.

heh

19 gph jet right on the turbo inlet.

Just because his engine bay is filled with shiny things doesn't mean he isn't retarded.  In fact, retards love shiny things.