Intercooler Sprayer
 

It seems inconceivable to me that the intercooler sprayer on my $30K+ '05 STI does not have an auto function, like the standard EVO (MR excluded). Even the stage 2 upgrade (w/toys) on my SRT-4 has an auto sprayer. It should be built into the engine controller logic based on rpm, engine load, throttle position, etc. Is there an INEXPENSIVE solution?

I just have my girlfriend reach over and push it since her head is down there anyway. =)

Seriously though, you can get a pressure or thermal switch pretty cheap. Hook up the pressure switch the same way you hook up a boot gauge. iirc, you can get an adjustable one for about $30 and just dial in the pressure you want to activate it. You could also build a circuit from a $10 programmable microcontroller to activate it at a specific RPM range.

Thermal switch might be the best bet, should also be pretty inexpensive. I'd consider a microcontroller and two temperature sensors and have it activate the water spray when it sees a big enough difference between intercooler temp and ambient air temp. This way you could also add some code that would prevent it from running indefinitely and emptying the water tank.

[QUOTE=dan2304k]I just have my girlfriend reach over and push it since her head is down there anyway. =)
.[/QUOTE]
[IMG]http://www.clubwrx.net/forums/images/smilies/rotfl.gif[/IMG][IMG]http://www.clubwrx.net/forums/images/smilies/rotfl.gif[/IMG]

"I just have my girlfriend reach over and push it since her head is down there anyway. =)"
That's great. But I don't think she'll do that for me.

[QUOTE=mrl859]"I just have my girlfriend reach over and push it since her head is down there anyway. =)"
That's great. But I don't think she'll do that for me.[/QUOTE]

She does for me...sorry, had to say it.

But back to the question at hand. I have an adjustable pressure switch from an '84 Saab Turbo that I'll be using for my auto setup...I'll post pics later.

Here is my pressure switch diagram....I used a 5psi switch, you can get a 10 or 15.

save yourself the trouble and get this
[url]http://www.intakeone.com/Pivot/Piv_WSC.html[/url]


or this

Well mine works, and only spend $20. Its an option for us without the dough.