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View Full Version : Water/Methanol Injection, bad or good?



MikeHsu
01-07-2007, 05:25 PM
So most people on this forum including myself are using some type of water/methanol injection (aquamist for me). All of the shops I went to stated that they hate it and you HAVE to get it tuned. While these shops works on mainly japanese cars, subarus and evos, they mentioned that when they used water/methanol injection, they blew holes in there blocks.

Please discuss, many people on this forum said that water injection does not need to be tuned. My last dyno was at 318 whp without aquamist, I was wondering if maybe I can gain like 2 whp if I filled up my tank of water/methanol.

ebydrc
01-07-2007, 05:31 PM
w/a injection can be a great tool if used properly

jmargo
01-07-2007, 05:31 PM
I am not tuned for the WI. It is just an added margin of safety for me. The reason is if you are that close to the edge of tuning the day you run out of fluid mid pull or the pump stops running....there goes your HG

ebydrc
01-07-2007, 05:33 PM
I am not tuned for the WI. It is just an added margin of safety for me. The reason is if you are that close to the edge of tuning the day you run out of fluid mid pull or the pump stops running....there goes your HG

if your running a dual stage setup with two m15 nozzles fully open spraying straight menthol and your tank runs out, and you tunned to that youll do a hell of alot more the replace a headgasket.

jmargo
01-07-2007, 05:44 PM
if your running a dual stage setup with two m15 nozzles fully open spraying straight menthol and your tank runs out, and you tunned to that youll do a hell of alot more the replace a headgasket.


OK....... HG,pistons and possibly block.

ebydrc
01-07-2007, 05:45 PM
OK....... HG,pistons and possibly block.

now your talkin ;)

Furious
01-07-2007, 05:47 PM
why most people say they dont like it seems to be because they believe WI to be a crutch, basically trying to overcome bad tunning. i will be running WI this year myself.

jmargo
01-07-2007, 05:52 PM
why most people say they dont like it seems to be because they believe WI to be a crutch, basically trying to overcome bad tunning. i will be running WI this year myself.

Thats true....you need to have a safe base tune prior.


I feel so inadequate running only a single stage M7.

ebydrc
01-07-2007, 06:07 PM
why most people say they dont like it seems to be because they believe WI to be a crutch, basically trying to overcome bad tunning. i will be running WI this year myself.

people tend to use it to compensate for poor tunning but it can also be used as a great tool, supercharged applications are great for this.

gerry_miranda
01-07-2007, 07:39 PM
Did you have aquamist prior to the dyno? Or did u install it after the dyno?
Is your AA tune suppose to have WI?

MikeHsu
01-07-2007, 07:56 PM
I did not dyno the car with water/methanol in my tank so aquamist was not used. The aa tune was not tuned with WI.

Davidson BMW
01-07-2007, 09:28 PM
They used this "technology" in fighter planes during WWII. I don't see why you would say its a crutch for 'bad tuning'. It lowers the cylinder temperature allowing you to run more timing/boost and you should tune for it regardless to get the most out of your car.

The Blue Oval boys use Snow Methanol Injection, and it has a warning light when your fluid is running low and some other safety features ( I forget now).

But the only problem I see is that its like nitrous -- watcha going to do when the bottle runs dry?

.

Neil
01-07-2007, 09:32 PM
I'm under impression that you only need to re-tune if you want to take advantage of WI in order to run more boost or ignition advance. Of course, if you don't do so, you won't pick up power, but you will be much less likely to suffer from detonation. In other words, you'll increase margin of safety (and not power).

Neil

ebydrc
01-07-2007, 09:32 PM
They used this "technology" in fighter planes during WWII. I don't see why you would say its a crutch for 'bad tuning'. It lowers the cylinder temperature allowing you to run more timing/boost and you should tune for it regardless to get the most out of your car.

The Blue Oval boys use Snow Methanol Injection, and it has a warning light when your fluid is running low and some other safety features ( I forget now).

But the only problem I see is that its like nitrous -- watcha going to do when the bottle runs dry?

.

with w/a injection a 6 gal can be very common and thats alot of fluid to run through a system, if your running a standalone you can have a "arming switch" and run a second map for when the "injection" is on and a secondary map for when the injection is not. aem ems along with many other standalone offer this feature.

Yasir
01-07-2007, 09:33 PM
They used this "technology" in fighter planes during WWII. I don't see why you would say its a crutch for 'bad tuning'. It lowers the cylinder temperature allowing you to run more timing/boost and you should tune for it regardless to get the most out of your car.

The Blue Oval boys use Snow Methanol Injection, and it has a warning light when your fluid is running low and some other safety features ( I forget now).

But the only problem I see is that its like nitrous -- watcha going to do when the bottle runs dry?

.

My car was set up by AA and yes it does have a low fluid warning light...to top it off it also has a another button that makes sure the light bulb in that low fluid warning system isn't fused..just an another safety thingy...:)
It's also boost regulated...can be set to come on what ever boost you set it up for...mine comes on at 12 psi...

Davidson BMW
01-07-2007, 09:38 PM
if your running a standalone you can have a "arming switch" and run a second map for when the "injection" is on and a secondary map for when the injection is not.

Yup... I was trying to add that but for some reason I couldn't edit. You could have a flip chip, tune, or whatever to change the function to run with and without.

Do any of you run straight water? I was kind of thinking about that if you're out driving around, you run low...what do you do? I know some run window washer fluid, and specifically BMW washer fluid. Go figure....


.

ebydrc
01-07-2007, 09:54 PM
Yup... I was trying to add that but for some reason I couldn't edit. You could have a flip chip, tune, or whatever to change the function to run with and without.

Do any of you run straight water? I was kind of thinking about that if you're out driving around, you run low...what do you do? I know some run window washer fluid, and specifically BMW washer fluid. Go figure....


.

its more about running straight menthol...

BMWManiac
01-07-2007, 10:51 PM
Were do you get methanol from and I wish my AA kit had some kind of low water level light...

BMW5868
01-07-2007, 11:18 PM
I'm looking upgrade to the new aquamist 2d + dds2 just because of some of those issues, one thing on AFR it doesnt like to be on the rich side, plus leaner will create more power.