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just got my aquamist 2c and am hooking it up to my haltech this week. wondered if anyone had built any pas for theirs. i think i've got it down, but am not sure, so i'd like any advice. what i gather is that i can use a pwm output and select wastegate, which will give me a map of duty cycles by boost. i'll start it at 10 psi and add more cycles/water as i get to 20 psi. i'm shooting for a 10:1 fuel to water ratio at 10 psi going to 7:1 at 20 psi. i figure that i'm at about 36% fuel duty cycle at full boost, and 100% fuel is about 4300cc's/min. so, i'm flowing about 1550cc/min at full boost. that means for 10:1, i've got to flow 155 cc/min of water and my water injector flows 280cc/min at 100%. so, i want to target the low end water injection duty cycles at around 55% and the high end at around 80% or so, right? any other thoughts from someone who's done it? thanks, gordon
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Hey there Gordon.
Although I am not a fan of it myself, everyone else is welcome to try water injection. :-)
I think you may be misunderstanding the wastegate control PWM. The Wastegate Control is a PWM signal that is mapped vs RPM and not vs boost. Although, it does make me think about a way of controlling boost that way. Hmmmm
36% duty at full boost must mean you are running some huge injectors, low boost, low rpm, or a very low torque output. Are you sure that is right?
sorry, matt. i go from 36-67% duty cycle on injectors. still thinking about which way to go on pwm map for water. sis you take the time to lurk on the british bbs that's discussing water injection? -gordon
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