Auxiliary Injection The place to discuss topics of water injection, alky/meth injection, mixing water/alky and all of the various systems and tuning methods for it. Aux Injection is a great way to have a reliable high power rotary.

Which AI to choose?

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Old 02-28-09, 02:02 AM
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SideWayZ The Only Way

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Which AI to choose?

Yes i dont know much about the AI, i have been trying to read up on them. i know bits and pieces. my car right now i pretty much daily drive it and at night i dont know why i just love to get on it.. do a good couple wot pulls... so im not sure which systems right for me.?

all my saftey mods are pretty much done, rad,ic, dp mp, street port, new hoses, ast,. mayybe couple other things that im forgetting. i want this motor to last.
Old 02-28-09, 03:11 PM
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humm 21 views and no answer
Old 03-01-09, 01:50 AM
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i have been looking at the Coolingmist Vari-Cool Kit and the AEM Methanol Injection Kit.. any help on deciding?
Old 03-01-09, 02:20 AM
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just search and find one that has the features you want, at the quality you want. Is there a reason you think you need AI? You going to be turning up the boost and getting a new tune?
Old 03-01-09, 11:33 AM
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I think he's in a similar position as me: I want my motor to last longer than most FD motors do. Plus all the heat in the engine bay causes the other components to fail faster, so a cooler motor means the whole car will be more reliable.

I think the bottom line is that someone needs to pick a couple of systems that match up to a stock FD to make for a pain-free installation. The Aquamist systems running off an injector signal summer plus boost sensor make a lot of sense in my mind.

Dave
Old 03-01-09, 11:38 AM
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I think that the FJO water injection is the most advanced right now. Otherwise I know there is alot of positive reviews for the alkycontrol kit. I've used the coolingmist stage 2 kit. Worked fine for me.

Search on the forum for these kits, there are alot of info on each one by many actual users.
Old 03-01-09, 02:03 PM
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yes i would like my engine to last longer, i dont know much about these systems so i wouldn't know which one would be for me, i would be having it professionally installed. plus cam at pettit told me that lately they been puttin more ethanol in gas and its killing the rotarys, he said an AI would be a good idea to get also.
Old 03-01-09, 10:49 PM
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i would like to play it safe when i turn up the boost also, so which route should i go?
Old 03-02-09, 02:03 PM
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people say they got kits from these people but they don't say what kits they got, i have been looking all over this section, found out a couple things, but still left in the dark. still not knowing about nozzle sizes and such. I was wanting to go a full water Ai but now since i hear about more ethanol going into gas i was maybe thinking about adding some meth to it, maybe a 30/70 meth to water? i would like to no go over 400 if possible.
Old 03-02-09, 03:34 PM
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also how fast does the tank normally drain?
Old 03-04-09, 12:16 PM
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whats the difference between putting it on the intake or the elbow?
Old 03-04-09, 07:58 PM
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read all the threads. you will find the answers you are looking for without creating a redundant thread.
Old 03-05-09, 01:28 PM
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i do but i am to stupid to understand some of them
Old 03-05-09, 01:47 PM
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http://www.alkycontrol.com

It's what's enabled me to run 1.6 bar of boost without an intercooler so far. Simple, highly robust, and massively effective.

B
Old 03-06-09, 02:39 PM
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ok thanks for the link, i learned a bit more... i do have a question that i dont think iv seen, if you do water only, and you run out while driving, its no bit deal right? air temps just go up to normal like you didnt have an AI so no damage done (i think). But if you had a 50/50 mix and run out would then would you be in trouble because you were using the meth?
Old 03-06-09, 04:17 PM
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Yes, to run 50/50 you should tune for it, and once tuned for it you need it.

If installing a kit for 50/50 it's wise to hook up the low-level sensor to a failsafe shutoff. That way you don't have to notice the little red light to avoid doing something bad.

With pure water it's not such a big deal but you could burn up your pump. So it would be wise then to hook the low-level sensor to make the pump shut off.

Dave
Old 03-07-09, 03:29 AM
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i was already looking and going to buy the low level sensor with the kit, what kind of failsafe shutoff do you mean? like a AM DDS3 or something like that? i was curious how fast does it take to go from full to empty? i may just run water so i wont have to worry as much, not really trying to make more power, just keep the engine running and happy

What would happen if i was tuned, had the AI and was only using water, and added maybe 5/95 or 10/90 meth water and i was tuned without it? it would run a bit richer if any am i right? it shouldn't hurt right?

I thank you for answering my silly questions, i just want to get all my knowledge in so i don't make any mistakes i may regret, with that i ask one other silly question, what type of water do you use? any kind? bottled water? or distilled?. I am planning on getting the VC2 under hood kit https://www.coolingmist.com/detailma...d=VC2Underhood
Old 03-07-09, 04:16 AM
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Yes it will run richer but the combustion will burn slower. 10% meth probably won't be a big issue but more meth slows combustion and requires timing advance to reclaim the power. Running a few percent rich is probably a smaller issue (?) but I'm not a tuner.

By failsafe I just mean the kit is wiring to cut off the boost controller or something when an error condition is detected. So for Howard's setup I think he even has his knock sensor wired to trip the failsafe.

You'll empty the tank based on how large the tank is and how heavily you're injecting. For a car that isn't going to be tuned for it, it will probably take a while to empty. I've heard that a tank of water per tank of gas is very possible, especially if you're not full throttle all the time where the injection is happening.
Old 03-07-09, 01:56 PM
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im going to get tuned by steve kan when we get him down, i was thinking after getting tune with just water, just to add that very little meth, to get that very little % richer, dont mind if i lose a bit of power for safety. with all the ethanol they are putting in the gas i dont think it would be a bad idea
Old 03-10-09, 05:58 PM
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Fd, you have to read a little more before you do this. There is a water vs meth thread sticky at the top. Basically if you want to take advantage of the water you have to turn up the boost. Run out of water then boom..
If you are considering using this setup as a preventitive app only you might lose some hp(h2o doesn't combust well). I personally have the coolingmist setup (not installed waiting for Kan in spring) and will run water. I've been haveing second thoughts as I live in Canada where temps do dip below zero sometimes in the fall, so i might run 80 water 20 meth...
From what I read, going water only, you are looking at 1.5 gallons per tank of gas.
Ohh at first I was thinking water because it's cheap and easy to find, apparently not so. You don't run hard water as it will mess things up, instead you need distilled water, which you can buy at home depot, beside the meth!!! haha, ironic. Be sure to post which way you went and why, might be helpful to have a thread explaining which way people go and why.

Last edited by donz; 03-10-09 at 06:01 PM. Reason: proof read
Old 03-10-09, 10:01 PM
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i dont believe that if you run out of water the engine will blow (i could be wrong), wont the temps just rise to what they would have if you didnt have AI? like if i go WOT withour AI air temps go up to 40 in my car but they go back down decently fast... with ai who i wouldnt know how much it lowers it.. i would be wrong....

They also sell distilled water at publix and i think other grocery stores.

but the 20meth does also sound like a good idea
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