I looked up the invoice. I purchased the kit June 6, 2008.

 

do you mind telling us how much it cost for the complete set?

 

$799.96 + $20 shipping. I think that only included one of the high speed valves and I bought the second one later. Also, I just recently added the 6x manifold.

 

/\ thanks. Are the 6x manifold a direct spray for every cylinder? That is awesome because it gives you equal distribution of meth on every cylinder.

 

+1...Aquamist dosen't have much of a website...interested in the 6x maniforld...

 

Yes. Here is the web page: http://www.coolingmist.com/detailmai...=6portmanifold

 

problem with direct port is if something goes wrong (like the pump/solenoid gets stuck open), there's no way to stop meth from flooding your engine. At least in the charge pipe, the TB is closed. It would probably take the moons to align to hit that scenario.....

I would definitely add a manual master on/off switch on a direct port.

 

I have a manual master on/off switch. Also my system uses the high speed valves. Default position is off. It actually takes power to keep them open, much like a fuel injector. So, although the scenario that you present is not impossible, I think it is about as likely to happen as a fuel injector getting stuck wide open and flooding a cylinder.

 

What has been your luck with the valve seals?

I had this system on my Z for about a week and the solenoid valves started to leak through. And because the system design tries to keep the plumbing system primed at pressure, it always leaked. Every five minutes the electric pump would turn on for about 1-2 seconds to re-prime the system. And it did this constantly.

I had to remove the system because it got so bad. I didn't even get a chance to tune it because it went out so quickly.

Just plain old water/meth....

 

Mine have not leaked. But, so far it has only been tested to make sure it is fully functional and operational (i.e., testing the F-CON inputs, outputs, flow rate vs rpm/boost, boost controller auto shutoff, auto map changes, etc.). I never got a chance to get the motor tuned with meth before I destroyed my motor. The new motor should be in hopefully before the end of June, so hopefully I can get the meth tune sometime this summer. Also, they have a new recirculating pump that came out, and I upgraded to that. Still, during all the testing and adjustments, the system probably ran for many hours, but I never detected any leaks. I noticed that Coolingmist no longer has the same valves available, and I think a new design is being looked at. Maybe experiences like yours have something to do with the changes.

 

Terry,

Before you reconnect your system, check the solenoid valves to see if the innards are rusted out. You can unscrew the knurled stainless ring holding the solenoid to the valve body.

I found one of the internal poppets was corroded/rusted by the water meth mix..... this is kind of ridiculous considering that it is supposed to be flowing a water/meth mix.

It was odd because there are two valve poppets per valve body. One poppet was corroded and the other was not. Makes me wonder if they were having QC issues with the poppet material/alloy.

Check your valves to see if they have the same thing.

 

Tony, do you have the high speed valves as well? CM told me they dont even use those anymore. I have the regular solenoids and no issues. Just have use the pump to progressively control the spray bc the solenoid would just freeze pulsing that fast.

 

i have my aquamist hfs-6 system installed but when ever i turn off the ignition.the nozzle will spary for 1 sec, is the normal??

 

Yes, they were the high speed valves. That is what attracted me to the system in the first place. The high speed yeilds smaller injection pulse widths, more control and greater repeatability.

At least the concept looked good on paper.

 

Thank you for the heads up, Tony. I'll check those.

 

LOL - no! Responded to your PM. For others, the aquamist uses a clever scheme for detecting IPW of the fuel injectors, but this means you must tap exactly the correct wires for power and fuel injector + and - leads.

marcelz, I tapped the fusebox in the driver's side footwell for the 12v line feeding the injectors (for my 2004 G35) and used that to power the control unit and provide the +12v signal for the injector sensing. This lead gets power slightly later than ignition +12v for example, so it can cause problems during start up like you describe (because the control unit thinks the voltage differential is caused by the injector firing).

Do all your testing with a nozzle taped up to your windshield so you can see that everything is working ok.

 

do you guys have black smoke issue??my afr is at mid 12 after the tune but alot black smoke coming out from 4000-6000 rpm..

 

Well u didn't tell me that in the PM. So not running rich. Could be oil I guess. I don't think it has anything to do with methanol, other than it is perhaps cleaning out all your carbon deposits?

Methanol will contaminate the oil - so best to change frequently.

 

It is also possible that tooo much water/meth is being injected. Causing a wash out of the oil on the cylinder walls.

Over spraying can prematurely wear out the rings and result in excessive oil consumption.

 

With regard to the amount of meth being injected, a second fuel map should be used to cut back on the gasoline flow rate and keep the AFR in check. If you just inject meth without adjusting the fuel map, it will run rich, and if you run too rich you will indeed wash the cylinders. Nonetheless, if you cut back on the gasoline flow as the meth flow is increased and keep the AFR in an appropriate range, cylinder washing should not be an issue.

With respect to the amount of water being injected, the rule of thumb that I have heard is no more than about 15% of the gasoline flow rate.