Water Methanol Injection on Subarus. Whats your Views.

riderz

So, how does Water injection work for you. I for one have used it for the past year and I can say it does do as the product manufactures suggest.

The coolingmist kit is one of the popular applications. I went with the trunckmount progressive injection with the Super High Speed Valves. Nice simple installation.

The installation itself took about 1 hour and required not much tools. I prefer to crimp the wires for more insulated protection than twisting them and taping. That in itself speeds up the installation process.

Tuning.
The whole idea behind WMI kits is to do two things.
1. Cool the intake temps
2. Raise the fuel octane.

Some say with a 50/50 mix its like rasing over 100octane from pump. Some say a 30/70 (W/M) would yeild about 120octane from pump gas.

This is done in two stages, as you go into boost the kit activates and mists the mixture from the tank into the boost path. This enters the intake and then the chamber. The water in the mixture takes heat with it down through the exhaust lowering the exhaust temps. This reduces knock.

The Methanol in the mixture raises the octane in the fuel (remember this is an alcohol based liquid).

Both action inadvertently raises the octane level, and allows you to run, more boost, more ignition and leaner mixtures. All these deliver power.

The downside.
If the pump fails or any other item in the WMI kit fails you leave your engine prone to damage. Its advisable to install a failsafe to the system

Secondly you must monitor you tank to ensure it doesnt run dry.

Thirdly, tuning is necessary. If you add WMI to the stock system the mixture being injected displaces the air that should be there. You would run rich and lose some power. Its advisable to lean mixtures slightly to compensate. Of course monitor knock and AFRs when you do this.

future shop llc · Posted: Sat Jul 05, 2008 6:29 pm Post subject:

Taught it over for the past few months and decided to take this route

My CoolingMist WMI kit has a 1 Gal tank and flow sensor... but, I am thinking of also taping into the washer fluid bottle as well and fill that with distilled water for the extra capacity.

If this makes sense that is?

I plan to run plain water at first for the daily runs and hill climbs through Maracas Wink

then use 60/40 Water/Meth for the brisk runs

riderz · Posted: Sun Jul 06, 2008 8:58 am Post subject:

Another way you could extract some nice power.

The $10...50whp mod.

So you tuned for water and methanol. Trust me you would be putting out some nice numbers. But you too damn lazy to go to your supplier to by meth. Well you dont have to turn down your boost and drive a granny car.

Buy a bag of ice. Fill your meth bottle to 2/3 and top up the rest with ice. If you can lean your mixture out a little. In the hottest of days you should get about 6 hrs if you can top up with the ice.

If you running just water. You may need to dial back boost a little but still lean your mixtures if they are under 11.2 (dont lean if you are already at threshold)

blackNshine · Posted: Mon Jul 14, 2008 9:05 pm Post subject:

cost to re-fill?

riderz · Posted: Thu Jul 17, 2008 12:07 pm Post subject:

Refill?

Refill with what?

Water or Methanol

Methanol normally cost about $50 a gal could last about 3 Gas tanks. And you could fill it yourself as easy as pouring it in.

sss · Posted: Sun Sep 07, 2008 3:21 pm Post subject:

where do u get the methonal to buy ?

monk_t · Posted: Tue Sep 09, 2008 4:55 am Post subject:

what he said...^^^

Ragnarok · Posted: Tue Sep 09, 2008 5:26 pm Post subject:

Easy to get if you work in a methanol plant....

kevinm · Posted: Sat Sep 20, 2008 8:02 pm Post subject:

yup lol

JWT · Posted: Mon Sep 22, 2008 6:32 pm Post subject:

i am yet to see an sti on water meth make actual HP

If 120octane was possible all tuners would be running that
i do not see that in ams or Mzm cars or any top sti or evo

riderz · Posted: Tue Sep 23, 2008 9:00 am Post subject:

Thats because you have never really seen any of those top STI or EVO. You ever ride in anything over 500whp paddna. I have seen 512whp with meth, 450whp 350Z with meth, 480whp STi with meth.

The thing is different tuners prefer different things. So MZM and AMS may prefer bigger injectors on pump, but other tuning shops prefer water meth. MZM market their tuning thru DCsports so more and more people are directed to their site but they are not the only ones that build engine etc.

My friends in Texas have 500whp daily drivers, you think that they do it on pump gas whole day. Think again.

greyfox2501 · Posted: Sun Nov 16, 2008 11:15 pm Post subject:

how does it affect gas mileage riderz,surely improves it right?if so by how much?