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Yes, the ELM interface, when you use the 327, works for all interfaces. The chip acts as a middle man between the OBDuino and the car.
There are cheaper ELM chips that only support certian protocols, i think, so you could just get the one that only does what you need to save a few dollars.
but either way, our code talks fine with the official ELM chips, after the ELM chip you just need to add the hardware they suggest to finish connecting it to your car.
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