Lets Talk Water Meth Injection

[TiTAN]

I have run the snow performance nitro Meth in my system, its basically like a small Nos shot when the system comes on, instant power increase.

mine starts injecting at 8psi and full flow at 25psi, you get the initial surge as it comes on boost and then a second surge shortly after when the wmi/nitro meth kicks in.

[TiTAN]

I have run the snow performance nitro Meth in my system, its basically like a small Nos shot when the system comes on, instant power increase.

mine starts injecting at 8psi and full flow at 25psi, you get the initial surge as it comes on boost and then a second surge shortly after when the wmi/nitro meth kicks in.

[mrsparkle]

I have been running a coolingmist stage 1 kit in my hilux with the controller added in now and wideband aem a/f (3.4l v6 trd supercharger) for ages now. Ive tried running water, water/meth, meth back to back and its all good in a nutshell. Water actually removes more heat than meth but meth gets rid of heat faster. I'm super interested in trying nitro in small quanities but still have a lot to learn about using more and more meth. I have found more and more meth (bigger injector and now trying 80/20 mix) just seems to keep adding in hp. I picked up 30hp just from adding in the original kit with the boost switch only. Its awesome stuff. Methanol is easy for me to come by but for the guys starting out the 50/50 mix is great. My bro bought the basic kit to add onto his car as a safety buffer zone for the track only.

Check out this link for a brief overview of water/meth systems. Its a bit cheesy but its pretty simple and makes perfect sense.

You guys could have used it a few pages back by the looks of it.

Bit of experience with these kits tells me that the coolingmist ones seem to be the best with aquamist a close second (coolingmist has a better controller IMO mapping from not only boost but can use 0-5v from afm if you still have one). Devils own/AEM ok but $$$ not as good as the first two and snow kits are probably better left alone.

[Mitcho_7]

^ that video is a nice basic explanation.

Im of a differing opinion about which kit is better though. From what I have read coolingmist kits are a close second to the aquamist kits, but the aquamist seem a little more difficult to set up.

Has anyone run and aquamist or coolingmist kit in a skyline?

[SiR_RB]

what would be the better system (ie most reliable and easy to setup), AEM, Snow Performance, Aquamist, or cooling mist ?

[jet_r31]

For the price of the cooling mist trunk kits through the american ebay dealer, you'd be hard pressed to buy another brand

for the money and quality imho

cheers

darren

[Mitcho_7]

I would think a kit that uses boost to trigger injection would be marginally easier to install than one that runs off of IDC or maf voltage.

The more features you get with the WMI kit you buy, will probably make it slightly more hassle to install.

Jet_r31, do you use a coolingmist kit? Are they of reasonable quality in your opinion and have you used/installed any other kits that you can compare them to?

Edited May 25, 2012 by Mitcho_7

[DaveO74]

So ive been doing a little research on evolutionM forums and it appears the biggest worry is getting even cylinder distribution so a lot of people run multiple jets to feed each cylinder.

Which brings me to a query, I'm running a plazmaman forward facing plenum and was going to just set up a progressive system with the jet ~8-10 cm from the TB.

Do you think this would cause uneven flow with a ffp? I'm a little concerned that cylinders 1-3 will end up getting all the mist and 4-6 will "starve" if that makes sense.

Idealy I should probably have a jet in each runner but room is pretty tight and IMO its creating more potential for failure points with multiple nozzles and tees for the feed lines etc.

Thoughts?????

[GTSBoy]

Absolutely anything could happen. From what you thought might, to the complete opposite.

If you want the best distribution, move the nozzle further upstream. Even then, you are at the whim of what the water droplets want to do as they go past the (angled, unless at WOT) throttle plate and then through the plenum.

[DaveO74]

So, correct me if I'm wrong but are you saying move the nozzle further away from teh TB to give the mist a chance to turn to a gas before it enters the plenum?

Mmmmmm, could work. I'm still Seeing cyl 1 getting more of the mix than cyl 6.

I wonder if say 3 nozzles tapped into the side of plenum itself would help with even distribution ?

[GTSBoy]

That's pretty much what I'm saying. A little more time for a larger proportion of the drops to vapourise, a ltitle more time for them to bounce around and come close to occupying the whole cross section of the pipe (You can no doubt imagine that the cone shaped spray from any nozzle is going to push more drops toward the other side of the pipe if there is enough drop velocity, or if there is no enough drop velocity, then drops won't penetrate more than half way across - therefore you need time for the them to tumble around in the turbulence downstream and spread out.)

3 nozzles in the plenum could work really well....or not. Without decent modelling or testing, there's just no way to know where the water is going to go.

[DaveO74]

Great, looks like I'll have to go and do a fluid dynamics degree just to figure out where to put my WMI jets.....lol

The evo boys love the stuff, especially in the US. Some of thier setups are very complicated with foolproof failsafes, map switching etc etc.

Unfortunately those of us with teh trusty PFC are pretty much limited to a boost cut type failsafe that will switch to running on actuator pressure.

I'll keep researching and see if can work out something skyline specific.

[DVS JEZ]

Would be good if u could angle the jet to spray with the flow of air to help vboid what gtsboy was saying.

But Dave i think u are over thinking it. Many people run with a single nozzle system before throttle body without issue's.

Has anyone seen any motor failures due too unever distribution?

[GTSBoy]

You'd have to assume that when tuning with uneven distribution, you end up tuning to the cylinder that's getting the least water.

[DaveO74]

Would be good if u could angle the jet to spray with the flow of air to help vboid what gtsboy was saying.

But Dave i think u are over thinking it. Many people run with a single nozzle system before throttle body without issue's.

Has anyone seen any motor failures due too unever distribution?

Yeah a little right angled jet pointed at the tb would be good, pretty sure it wouldn't effect the air flow in pipes too much.

You could be right though Jez, I may be over thinking it. I suppose if the plazmaman flows ok in it's current state the. It's just going to take any gas from the meth with it and still flows as it should than things should reach number 6 ok.

I suppose that with the stock intake WMI doesn't starve 1 & 6 so probably the same deal???

[Mitcho_7]

You'd have to assume that when tuning with uneven distribution, you end up tuning to the cylinder that's getting the least water.

I think this comment makes a lot of sense.

If you listening for knock and you are getting slightly uneven distribution, then the cylinder that isn't getting as much injected into it will ping before the others. As soon as you can hear the engine ping, back the timing off for safety and there shouldn't be any problems.

Having said that, I'm not an expert by any stretch. Most people seem to have no dramas with just one nozzle though... I think like it was mentioned it would be less of a problem with the stock intake on a rb25 compared with a forward facing plenum.

Edited May 27, 2012 by Mitcho_7

[DaveO74]

That's what I was thinking Mitcho. On the stock plenum the mist will flow into the middle and "spread" out.

What concerns me with the plazmaman is the most will have to pass over 1,2,3,4,5 to reach number 6.

But as Jez said I think I'm over thinking the whole thing.

Should just connect up the kit and see what happens

[Mitcho_7]

Which kit have you got?

[blk94r33]

Has anyone here DIY'd a kit?

Looking at the basic cooling mist stage 1 kit which is just a pump, nozzle, lines and boost switch. Put this together with a "5th injector" style driver running off an injector signal along with a PWM solenoid and presto a fuel proportional WMI kit for under $400 that doesn't use duty cycle to the pump to regulate itself.

Has anyone tried this with success?

Where can you source a solenoid that can be PWM'd and is compatible with water and methanol?

[SiR_RB]

http://www.ebay.com.au/itm/AEM-WATER-METHANOL-INJECTION-KIT-1-GALLON-TANK-30-3000-/360458308794?pt=Motors_Car_Truck_Parts_Accessories&hash=item53ecfd4cba

this looks like a good kit, comes with nice metal fittings/nozzles and afew safety features too

will prob get this in the near future once i finalise my mods and ready for finaly tune.