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Calibration The controller does not offer any numeric feedback or markings to indicate where the injector duty cycle (called "fang" on the controller) or the temperature threshold are set. The default setting on the controller was pretty close for fang and only required minor tweaking to suit my needs. Temperature threshold calibration was a horse of a different color. To fine tune the temperature threshold I eventually bought an indoor/outdoor thermometer ($20 at Lowes) and mounted the outdoor probe on the back of the intercooler right next to the controller sensor. The readout is mounted inside the car where I can easily see it. Without a temperature readout I found I set the temperature threshold way to low and consumed lots of water or too high and got no spray. Trust me, get a thermometer and save yourself lots of hassle trying to tweak it by the seat of your pants. I spent a week trying to get mine right before I got the thermometer. Plus, it's interesting to watch the temps while you drive... intercooler temperatures are not always what you'd expect. I have the temperature threshold set to trip when the intercooler temperature is about 25-30°F above ambient. The "fang" threshold is set to trigger when I call for more than about 3/4 throttle. The way the fang responds is I step on the throttle, boost comes up and right about 2,700 rpm the engine demands enough fuel and threshold is tripped. With these settings I find I can go for about 2 weeks of normal driving (2.5 tanks of fuel) before I need to refill with water. Intro | Install Part 1 | Install Part 2 | Testing | Monitor |
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