Water Meth injection with W2A IC?!

Q&A regarding engines, turbos, and intercoolers and power upgrades

Re: Water Meth injection with W2A IC?!

Postby underscore » Tue Nov 27, 2012 10:58 pm

And of course never run more than 50/50 water/meth.
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Re: Water Meth injection with W2A IC?!

Postby aus jd 2703 » Wed Nov 28, 2012 12:14 am

athousandleaves wrote:4 - exhaust - modify A/R and cool exhaust


why would you want to do this? the heat is what spins the turbo, if you cool the gas you will slow your spool... and if you go after the turbo whats the point? never heard of this just trying to understand why any one would do it except for maybe emissions (exhaust aftercooler).
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Re: Water Meth injection with W2A IC?!

Postby athousandleaves » Wed Nov 28, 2012 12:32 am

By spraying into the exhaust the expanding steam can alter the effective A/R of the turbo allowing faster spool up along with greatly decreasing the temps of exhaust pipes. If not done properly you will destroy your turbo.

It also makes your emissions MUCH cleaner.

Have a google at it if you want more info.
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Re: Water Meth injection with W2A IC?!

Postby zero06 » Wed Nov 28, 2012 12:44 am

The car has an ats ecu, soo I am still running the cold start injector and I am driving it in wi winters soo that's out, I'm worried about condensation on the IC fins if I inject pre intercooler or turbo...
I was thinking about tapping the IC, And injecting into the end of the IC right before the outlet tube.

If you tapped into the coupler, how did you make sure it sealed?
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Re: Water Meth injection with W2A IC?!

Postby MXP_57 » Wed Nov 28, 2012 1:05 am

Yes i wouldn't inject before the IC. Right at the exit is good.

Not in the coupler it will be too much pain to seal it properly.

Also consider a progressive controller if you want to take full advantage of WI. Devilsown have some cheap ones. (cheap as in compared to aqua mist) lol Like this you can inject considerable amount of water early and increase as you go up in revs.

Detonation often happen at low revs when the load is high, but you also want to inject more water at higher rpms. But if you inject to much water at low rpms it's gonna kill ignition.
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Re: Water Meth injection with W2A IC?!

Postby underscore » Wed Nov 28, 2012 1:14 am

I was planning on drilling a small hole in the coupler, and putting in a bolt +washer with the head on the inside of the coupler, and a nut + washer on the outside. Said bolt would be larger than the injector, and drilled and tapped for the injector. Once everythings snugged down, silicone it to seal up any potential leaks, and install it.
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Re: Water Meth injection with W2A IC?!

Postby klue » Wed Nov 28, 2012 1:27 am

[img]http://sphotos-f.ak.fbcdn.net/hphotos-ak-prn1/558795_504707419563993_64346191_n.jpg
[/img]


here is a picture of WI set up with a RC cooler. Wasnt anything fancy, just a kit I put together years ago, worked awesome I was doing low 14s with a ct26.
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Re: Water Meth injection with W2A IC?!

Postby MXP_57 » Wed Nov 28, 2012 1:33 am

Yes it might work. I'd definitely do this if you are running a MAP, but with the MAF i prefer to avoid any chance of air leak post AFM.
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Re: Water Meth injection with W2A IC?!

Postby ___Scott___ » Wed Nov 28, 2012 4:04 am

Here is what I did on my old 165:
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Mounted to the top of the intercooler just before the outlet is actually a cold-start injector from an '89 Camry if I remember right. It worked really well at killing detonation, but I didn't crank up the boost to assess its usefulness at helping make power.
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Re: Water Meth injection with W2A IC?!

Postby MrMcQuacker » Sat Dec 01, 2012 6:56 am

So from my understanding. Pre turbo will cool down intake temps and quicker spool and help turbo and help resist detnation? If that's the case that's exactly where I am going to put mine.
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Re: Water Meth injection with W2A IC?!

Postby MXP_57 » Sat Dec 01, 2012 4:41 pm

To help resist detonation you want the water to evaporate during combustion so it has to be as close to the cylinders as possible. You are right for the rest.
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Re: Water Meth injection with W2A IC?!

Postby gearhead313 » Sun Dec 02, 2012 12:01 pm

MXP_57 wrote:To help resist detonation you want the water to evaporate during combustion so it has to be as close to the cylinders as possible. You are right for the rest.



exactly. it will also be best atomized when closest to the throttle body due to the air properties as it passes through. and dont spray it into the turbine..sheesh.
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Re: Water Meth injection with W2A IC?!

Postby underscore » Sun Dec 02, 2012 3:53 pm

MrMcQuacker wrote:quicker spool


The way I'm reading it you need to spray into the exhaust for a quicker spool.
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Re: Water Meth injection with W2A IC?!

Postby athousandleaves » Sun Dec 02, 2012 4:27 pm

gearhead313 wrote:dont spray it into the turbine..sheesh.


Mind backing that up with some facts?


As air is compressed it does what? Gets colder? :bangshead:
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Re: Water Meth injection with W2A IC?!

Postby zero06 » Sun Dec 02, 2012 6:19 pm

this topic is about water meth injection, not anti-lag methods... soo lets get off of that

my problem is that I am getting boost creep under WOT with the ct27 + my 3" exhaust...
with silencer in I am getting slow creep from 15-18 psi. my wastegate isn't flowing enough. and no its not the downpipe, I have already checked.

I'm looking at water meth as a safety net. anyone know of any good systems? Kit's or ways to make one using the w2a IC?
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