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Ques bout water injection

Old 05-11-2003, 04:40 PM
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Default Ques bout water injection

Hi, i just read the "write up" bout water injection and well i could build this ---- in 20 mins outa ---- i got layin around but does it really help in a low boost aplication on a d series intercooled? Im planning on running 6 psi on a t25 and a zc and ill pro have an intercooler but will injectin it help squeze more power or make it safer or is it a no no. and one more que wht type of injector or carb jet should i use?

thanks guys
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Old 05-11-2003, 09:28 PM
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Default Re:Ques bout water injection

Low boost doesn't require an IC or water injection to be reliable. You may as well install them, though, as you won't want to run "just" 6 psi for long.

Water injection works great. The problem is, you tune your car for it, and if you can't change your tune for when the water runs out... eeek. Make sure you have a solenoid set up with a manual boost controller and one of those nifty windshield washer reserviors that has the *level sensor* that will keep the solenoid from activating high boost when you run low on your water/alky mix.
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Old 05-11-2003, 10:17 PM
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Default Re:Ques bout water injection

thanks man your very helpful
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Old 05-12-2003, 04:27 PM
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Default Re:Ques bout water injection

Set it at 4+ psi, lower then that seems to hog engine performance (this may just that you can advance the timing to gain it back). I've found with the distro fully retarded and the AFC hack that injecting water around 5-6 psi is my peak curve (I'm running 10 psi).
When I get my intercooler I'll try adjusting the timing around and such and post up the results as far as when the 'perfect' water injectoin point is... but don't do it to low unless you want to risk advancing timing (it may ping it may not I dont know for certain).

The advantage is that every time you reach peak boost your manifold will cool down, so you will get more long term life if you set it at about 5 psi.

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