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Placing water injector before the BOV?

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91-gsx

15+ Year Contributor
932
11
Mar 31, 2005
San Jose, California
I was wondering if anybody here has experience with injecting water right at the intercooler outlet as opposed to the throttle body elbow? I was planning on putting my water injector at the intercooler outlet, but am not sure if I should because the BOV might allow some water into the inlet of the turbo when it opens between shifts because I am recirculating the BOV. Let me know what you think about this. Thanks for the help.
 
Why do you want to inject that far down? What are your goals.
 
makes no sense to inject there...Most water injection kits suggest installers to install the jets near or at the throttle body for optimal performance/efficiency. I would imagine if installed that far back before the BOV that you would get unwanted debris/detritus gumming up prior to the air entering your intake manifold...Read the directions and install the water kit accordingly...it's written that way for a reason...
 
Why do you want to inject that far down? What are your goals.

It will cool the air down more when you allow the water to have more time and distance to absorb the heat out of the air. My goal is to cool the air and parts down using water injection, not alcohols.
 
It will cool the air down more when you allow the water to have more time and distance to absorb the heat out of the air. My goal is to cool the air and parts down using water injection, not alcohols.

You have pretty much just said what is wrong! It will absorb the heat and then the water is hot and will make hardly any difference what so ever! The reason for W/I is so you spray cold water to help cool the combustion chamber down if you put hot water in it you will heat soak it and will not mix with the air very good! Thus actually making less power then putting the nozzel closer to the TB! You can run 2 nozzels if you have smaller jets I've seen it done on a few cars but not by the IC exit! So if you wanted I guess you could put 1 there and then 1 by the TB and I'm assuming that would help with the temp and you would be using the same amount of water as 2 smaller jets flow the same W/flow as the 1 bigger jet!

I personaly think its a bad idea these companys don't spend thousands on R&D for nothing and always is the most optimal place for it! But you could try it and see what you come up with! Just make sure you never run a blow thru mas as water on that will screw it up big time!
 
You have pretty much just said what is wrong! It will absorb the heat and then the water is hot and will make hardly any difference what so ever! The reason for W/I is so you spray cold water to help cool the combustion chamber down if you put hot water in it you will heat soak it and will not mix with the air very good! Thus actually making less power then putting the nozzel closer to the TB! You can run 2 nozzels if you have smaller jets I've seen it done on a few cars but not by the IC exit! So if you wanted I guess you could put 1 there and then 1 by the TB and I'm assuming that would help with the temp and you would be using the same amount of water as 2 smaller jets flow the same W/flow as the 1 bigger jet!

I personaly think its a bad idea these companies don't spend thousands on R&D for nothing and always is the most optimal place for it! But you could try it and see what you come up with! Just make sure you never run a blow thru mas as water on that will screw it up big time!

makes no sense to inject there...Most water injection kits suggest installers to install the jets near or at the throttle body for optimal performance/efficiency. I would imagine if installed that far back before the BOV that you would get unwanted debris/detritus gumming up prior to the air entering your intake manifold...Read the directions and install the water kit accordingly...it's written that way for a reason...


Maybe you should educate yourself on what water injection really does. Do not comment on these threads in your manner until you have done so. You have pretty much said what is wrong!

I think it is rather funny that I chose not to comment on this thread after I got these types of answers. Not one person that has answered, has mounted the injector at the intercooler outlet. Yet, everybody felt compelled to put it down with bullshit. LIKE YOU JUST WENT OUT AND READ ABOUT WATER INJECTION AND THE R & D:rolleyes:... Your right R & D is very important, and the conclusions that they reached were very interesting. Now go and LEARN what those are.

I asked for an opinion, and by opinion, I meant an educated one.

I have a Devil's Own Water Injection Kit. Here is a picture of all the places Devil's Own and other Water injection companies use to show you all the different locations you can mount the water injection. Do you see what I mean by asking all you preachers for your REAL WORLD opinion...

Where to locate your alcohol-water injection nozzle
That is a link to that exact web page. Read it. It tells you why to use one area over another for your particular application.

Directly from the alcohol-injection web page above:
"3 Post Intercooler

Most computer controlled engines have an intake air temperature (IAT) sensor. This sensor monitors the temperature of the air going into the motor. The reason for putting it before the IAT sensor is because it will see the cooler temps and the engine will advance timing, allowing for more power. Also placing the injection nozzle as far from the cylinders/air intake sensor as possible, it allows for the water/methanol mixture to be better absorbed into the intake air charge. This allows for great distribution to each cylinder. This post intercooler nozzle location should be the primary nozzle location to be considered for most users.

In theory, since the air charge will be mixed for a longer distance, and therefore time, allowing for the moisture to be absorbed by the air, creating the coolest possible air charge going into the cylinders. Water/methanol molecules from a nozzle located here have more time to be absorbed by the intake charge exiting the IC before making it into the combustion chamber."
 

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