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lc1install [2012/03/13 17:41] twdorris |
lc1install [2012/03/13 17:53] twdorris |
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==== BLUE wire - notes ==== | ==== BLUE wire - notes ==== | ||
A good, solid high-current grounding point here. The ECU pins listed above are good choices or you can try a good, clean chassis ground point too. | A good, solid high-current grounding point here. The ECU pins listed above are good choices or you can try a good, clean chassis ground point too. | ||
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The only major concern with connecting something to the ECU's sensor ground is that it might draw too much current and [[blownsensorground|blow the ECU's internal sensor ground track]]. But we've measured current draw on the WHITE wire to be a measly 45-50 mA. This will not cause any problems on the ECU's sensor ground circuit. | The only major concern with connecting something to the ECU's sensor ground is that it might draw too much current and [[blownsensorground|blow the ECU's internal sensor ground track]]. But we've measured current draw on the WHITE wire to be a measly 45-50 mA. This will not cause any problems on the ECU's sensor ground circuit. | ||
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**NOTE:** Do **NOT** connect the BLUE wire from the LC-1 to the ECU's sensor ground. You will damage the ECU's sensor ground track if you do this. **ONLY** connect the WHITE wire from the LC-1 to the ECU's sensor ground, **NOT** the BLUE. | **NOTE:** Do **NOT** connect the BLUE wire from the LC-1 to the ECU's sensor ground. You will damage the ECU's sensor ground track if you do this. **ONLY** connect the WHITE wire from the LC-1 to the ECU's sensor ground, **NOT** the BLUE. | ||
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+ | ==== YELLOW and BROWN wire - notes ==== | ||
+ | The YELLOW wire from the LC-1 is defined by default as the "narrowband" simulation output of the LC-1. Because you're using ECMLink, you can leave this wire disconnected (but isolated from ground with some heatshrink or electrical tape) and simply use ECMLink's [[v3narrowbandsim|narrowband simulation]] function instead. | ||
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+ | The BROWN wire is defined by default to have a mapping of 0V = 7.35 AFR (0.5 lambda) and 5V = 22.39 AFR (1.52 lambda). This will work nicely using ECMLink's LC-1 datalogging item. So run the BROWN wire into your selected ECU input for logging and then configure ECMLink to use this input for the LC-1 log item (ECU Inputs tab) and, optionally, for the narrowband simulation function as well. | ||
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+ | ===== Narrowband sensor ===== | ||
+ | When running an LC-1 wideband, you can simply enable [[v3narrowbandsim|narrowband simulation]] in ECMLink and use nothing but the LC-1's analog output for both wideband data and narrowband closed-loop operation. | ||
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+ | However, if you have the option of running both a wideband sensor and a narrowband sensor, considering doing so. This is probably more common on a 2G where you can run the narrowband sensor to the factory Front O2 pin while logging the wideband sensor on the factory Rear O2 pin, but there are enough inputs on a 1G to do the same thing. | ||
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+ | The advantage to running a factory narrowband is that you get a good data point for checking up on the LC-1's calibration. The narrowband sensor is **going** to switch around stoichiometric. It's really good at that. So as long as you're running in closed loop operation using the factory narrowband sensor, you should see an LC-1 logged value of about stoich as well. | ||
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+ | It's not a big deal either way, though. So don't go out of your way to make it happen. If it's convenient, great, give it a shot. If it's not, don't worry about it. |