Yeah if you were using the TPS it uses injector duty. The downside to that, is it appears you would never get full flow from the nozzle unless your injector duty was at 100 percent duty. Since 100% of say 80% duty is still only 80%. Plus that's kind of confusing to think of it being a percent of a percent, in that case you might as well just put 100 everywhere and let the injector duty control the amount of water being injected.

Hmmm, that's not a bad idea haha. At least that way I wouldn't have to get it tuned, it would be so easy I could tune it myself haha.

I tested the system tonight. I think it's working cause my AFRs are a little lower now, from what I can tell anyway. I had some leaks here and there but I got them tightened down. Now I just have to decide if I wanna run off of TPS or RPM vs. MAP

this has been a great thread even tho it is old. AI kits are very important for our engines longetivity, so here is a nice /bump!

also i am planning on getting an AI kit from Snow Performance for christmas :)

http://www.snowperformance.net/product.php?pk=8

Actually I've been meaning to post in here for a couple weeks now.

I think my AI is NOT working now. I disconnected it because I noticed my water level wasn't going down at all, after 2 days of driving. I'm going to use my air compressor to shoot air directly in the vacuum line, and give it gas for RPMs while I have the nozzle out so I can see if it's actually spraying.

yeah doesnt sound like it's spraying. you should see some kind of drop in water level if you have been boosting.

Exactly what I was thinking. What's weird is that I could hear my pump kicking on when I was under boost, so I thought it was spraying until I saw that the water level wasn't dropping. Actually the pump seemed to be kicking on even when I wasn't really boosting much, but I thought maybe I just had the map set up that way. Now I'm worried that maybe I messed up the pump or something.

Disregard. I just tested the water injection and it DEFINITELY works.

I had 25psi from the air compressor (I probably should have tested it at a lower pressure too but whatever), and before even revving the engine it was spraying water when I gave it pressure from the air. comp. Then when I revved the engine higher it sprayed ALOT of water. So it's definitely working.

If I'm running MAP vs. RPM, shouldn't it not spray until I have them BOTH at the settings I prescribed? Or is it supposed to spray when you have at least one of them? Because obviously the car was idling at 1000rpm or less, and I have water set to come on around 2000 or 2500 I think. And I think I have it coming on around 8psi or so, so obviously that was already reached by using 25psi. But I thought it wasn't supposed to spray until I had reached the proper psi AND RPM. Anyone have insight on this? Most likely anyone with this same kit, or at least knows something about it?

If it's a progressive setup, I would think it begins to spray at 8psi and will increase the flow as RPMs climb...

Yeah it's progressive, as far as I can remember anyway. OK cool, thanks!

Have you looked in the manual? It should say. I'm pretty sure the hd systems will spray whatever you want them to spray based on both rpm and map. You could change it to flow less at higher rpms, or flow less at higher map signals.(not that you would want to) It has a fuel map setup just like a standalone ecu that's based on load(map sensor) and rpms, you can enter any number you want in each cell. You have full contol of flow at any rpm and load you want to change.

howard coleman ******on meth injection
http://www.rx7club.com/forumdisplay.php?f=173

I haven't looked at the manual again yet. I've been messing around with the map for a few weeks now, trying to find something I like until I get the car tuned again.

Yeah Howard is the one that inspired me to use AI, so I've read most of his threads. Thanks for posting that up!

I have been doing this since 1992, many have copied my results and my systems. It's the number one thing that makes turbocharged rotaries live under the stresses of high power production :beatdeadhorse5:

^So do you have a website with some pics or something? Thanks for your input!

I've had my system installed and operating for several months now. I still haven't had the car tuned on AI or the new turbo kit yet, but that is coming *hopefully* soon. I just switched to windshield washer fluid, mostly so the distilled water wouldn't freeze in the lines again and rupture the diaphragm in the pressure sensor and start leaking haha.