I own one of the $30 generic OBDII devices, and a friend of mine has the kiwi one. I have tried them both with Torque on my phone and the kiwi one is far better. It reads faster and gave more accurate data. The generic one works for some values like rpm, but it would always show my AFR at like 16 no matter what. If I could do it again I'd pony up the loot for the kiwi one.
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