Have the amp splitter, and the mm3, did my delete labor day weekend. No issues at first, did the original read and write with only the mm3 in the odb2 port. Ran for 3 days, changed tunes several tines. Then, 3 days later after an extended period with the accessory on, started truck and had no throttle. Saw the throttle position change on the mm3, but no response from truck. Reflashed the truck again and, no issue since. Not sure if it was the splitter, I've begun to turn off the mm3 when listening to the radio with the truck off. Just a heads up.

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