This "smart" kit from coolingmist also looks quite decent. It has a failsafe and can program liquid delivery via a high speed valve from any of 3 inputs (MAP and RPM included):

http://www.coolingmist.com/detailmain.aspx?pid=1005 It's nearly 1/2 the price of either Snow or Aquamist.

EDIT: I just read the PDF - I can't imagine adding all that crap onto all the crap that is already on my car. You can add failsafes for your failsafes. Jeez. C16 will just have to do.

 

Are you saying simple is better You too funny Raj

 

What I really like about the Coolingmist system is the flexibility and power of the Smart Injection Controller and their corresponding software. If you look at my drawing, I have it controlling alot of things. It costs right around $200, which is a very good price considering everything it can do. For example, in addition to controlling a meth system, it also would be better at controlling a NOS system than any of the NOS controllers I have seen. In fact, if I end up adding a NOS system to my car, I will definitely control it using a Coolingmist Smart Injection Controller. I have already maxed out the number of terminals on the one that I have, so I would just add a second one.

As a side note, I have my drawing in Visio format. If anybody wants to use it as a base to design their own system, just PM me with your e-mail and I'll send it. (Coolingmist is now using it with my permission to generate drawings of different configurations.) Again, I take no responsibility whatsoever for any results, good or bad (although if you do it right, the results should be very good ). If and when I add NOS, I'll generate a drawing for that setup as well.

 

It doesn't look like coolingmist has a way to control flow except by pulse width modulating the pump. Is that true? If so that is highly suboptimal. I've had some seat time with the Aquamist HFS-6 but I need another month and time on the dyno before I'm ready to publish my experience.

 

ya, CM only uses PWM the pump, but when I called the other day, seems they are designing a hi speed solenoid valve.

 

No. That is one way of controlling the flow. On my setup, I set the pump to run at one speed and control the flow with their "high speed valves". The pump has some sort of recirculation mechanism. I have two of the valves, which is probably overkill. I anticipate injecting a good amount of meth, though, whenever I get the new motor tuned for it. The motor should arrive this week. Hopefully I'll have some results relatively soon.

 

hmm, when I talked to CM, they seemed to indicated they didnt have any hi speed valves yet? link...?

 

Maybe they are out of stock, or are making changes to the design. I don't know. I do have them though. I purchased them nearly 2 years ago. I had the system completely installed, but never got a chance to get my build tuned with meth injection before I destroyed two of my rod bearings.

Here is the most recent drawing of my setup:



I have not installed the 6 line maifold yet. I'll be using that with the new motor. Also, I upgraded to the new pump that has the recirculation feature. It should make for more consistant flow. I thought it would be a good idea since I am injecting directly into each runner.

 

Well, it's not any less complicated than the AM setup! I cannot understand why you have two fluid control valves in parallel though... They both seem to receive the same PWM signal, correct? If they each fed 3 nozzles, then it might double the flow capacity, but I think you can easily inject 6 nozzles with one valve and pump. Looks like the controller provides the PWM signal via the red and green wires coming from the controller and it in turns receives the PWM signal from the Smart injection unit, which reads RPM and MAP. Is that correct? I like the idea of port injection but it's so much work for incremental gain - you think it will have a significant impact? My thought is that if the air is imbalanced between cylinders, the W/M will be equally so with pre-TB injection.

 

At the time I decided to use two valves, I wanted more flow than a single valve was capable of. If I remember correctly (it has been nearly two years since I made the selection), each valve was a maximum flow rate of 10 gal/hr. At that time, I wanted to shoot for 650 whp with a 15% meth/fuel ratio, which meant that I needed a flow rate of about 14 gal/hr.

With the 4.0L motor, ideally I would like to get to 750 whp with meth injection running. That is going to take a lot of meth. 20 gal/hr puts me at about a 19% meth/gasoline ratio. I'm not sure if that is enough meth to keep detonation at bay at that hp level. We'll see when it comes time to tune.

FYI, the solenoid is matched with one of the valves so that I can bring one valve on-line first, then bring the second on line. Each valve has a minimum flow rate. So I bring one on at the minimum flow, then a bit later bring the other on line, then further open both valves as needed based on MAP/rpm.

I almost forgot to answer your question about using port injection. As I said, if I stand any chance of getting close to 750 whp on pump gas, I am going to be flowing a lot of meth. A 19% flow rate (20 gal/hr) would give me a net octane of about 107, which might be enough. Again, we'll have to see how it goes when we tune. Anyway, that is a lot of meth. I was concerned about it pooling in the intake plenum.

 

Thanks for the detailed breakdown. Pooling in the plenum would be a concern for anything over 50/50 W/M, and now I recall you were thinking of running 30/70, so that makes good sense.

The valves at 100% duty cycle (full open) will flow as much as the tubing will allow, will it not? In order to realize true doubling of the bandwidth, wouldn't you need to remove the restriction at the "T"? Or does the tubing expand at that point? The fluid flow sensor can flow that much also? That might be a restriction...

 

No, the limitation is the valves themselves. Like I indicated, I think thay max out at around 10 Gal/hr. The tubing will flow well beyond that. I don't remember why the valves are limited, but I'm sure Dave at Coolingmist can explain that. Maybe he is designing a new valve with increased flow. I don't know. Anyway, I ran some testing on my previous setup just spraying out plain water into a bucket, and it seemed to work just as planned.

Before I went with my setup, I looked at Aquamist, Snow Performance, and maybe even some others. For my goals, the Coolingmist seemed to be the best fit, especially the Smart Controller. That controller is exremely flexible in what it can do for someone who wants to take the time to set it up. I have it shutting off the the boost controller and reverting back to my base EMS map if the meth flow drops below a predetermined flow rate for the particular MAP/rpm range or if the meth tank runs dry. I also have the LEDs mounted near my AFR display to alert me when this happens. When the meth injection system is turned off, the boost controller works as normal, but with whatever map in the F-CON is presently selected, other than the scramble map. The scramble map is dedicated for meth injection. When I turn the meth injection system on, the scramble maps in the F-CON and EVC boost controller are automatically activated.

All that being said, the Smart Controller can be used with the other kits. Knowing the automotive aftermarket, though, I wouldn't be surprised if the other manufacturers have come out with something similar since I bought my kit, but I have not even looked at this in a long time because I already have what I need.