Alcohol/Water Injection

[wret]

Anyone try alcohol/water injction yet? Apparently there's a lot of horsepower to be had quite cheaply.

http://home.att.net/~stevemon/AlcoholInjMod.html

 

[FallouT]

there are MANY posts on this in the fourms, just do a search. it seems they do work by cooling your intake charge. and gives a noticeable power increase.

this is the same as an IC sprayer right? the whole "injection" thing makes it a lil confusing.

 

[bull999999]

It's not the same as the IC spayer. I had one in the Stealth TT I used to have. With stock turbos boosted to 18 psi for testing purposes, the datalogger showed the knock sum of 14 (BAD!!!). With the alcohol/water (was running 50/50 mix) injection on (set to come on at 12psi), it reduced the knock sum to 2 (acceptable). I also felt a little extra kick on my butt dyno when the alcohol/water injection came on.

 

[DSM_AWD_TSi]

I've been researching about alcohol/water injection too, I found a boost dependent kit,SMC Kit. It's $350 for a basic and $100 for the boost dependent controller. It seems pretty nice (& expensive). I'm still waiting to see if I could get a cheaper boost dependent kit, be so far this is the nicest on I found. Hope this helps.

 

[Defiant]

WI is PFM. There's many theories on what it does, but whatever it is, it will allow you to up your tuning across the board. More boost, more spark advance, and all with smoother running -partly due to the benefit that it keeps your combustion chambers spotlessly clean. It takes a very small amount of water to do the job, and although a proportional system might be the pinnacle, it's a geegaw that's not really necessary and surely not worth the dicking they give you in the wallet for it. Check the web, the information is almost endless.

 

[wret]

I can't believe I had never heard of it. Here's a simple, cheap idea: it looks like they use pumps that put out 100 or so psi. If you could do it with less, say around 15, why not connect a line from your intercooler piping to a reservoir of water and a water line back to the pipe. Voila, instant pressure dependant water injection. No pumps, no valves, no sensors, no wire...

 

[maximage]

We used to do this a lot in the Daytona tuners group I was in. All we used was a rear wiper wsaher tank and sprayer, and did a 50/50 mix of water/alchohol. Get a litttle brass sprayer nozzle, and plum it in before the IC, or in front of the throttle body depending on your needs, and vioala. We used to hook them up to WOT switches, but you could get the boost dependant switch as well.

 

[wret]

Yeah, I just realized my idea would not work. Water would have to go in the low pressure side, i.e, before the turbo.
hmmm