
When I received the product in the morning I went out to start the truck to see what codes it would get. After the engine started, it began to idle rough. When the accelerator pedal was pressed, the engine speed was very low. As soon as I plugged in the AL500 the rough idle went away and after clearing the codes the warning lights went out and the engine ran as usual. I don't know how closely related one was to the other, but I was impressed nonetheless.

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