If you can't find any bad sensors then you are going to have to start digging through the harness. could be O2, CTS, MAP, MAF. you don't have any codes right? You have to look at the values of each sensor and see which one is way off. As far as the timing thing goes Im pretty sure thats not your problem.
Also I would comb over for vac leaks just to make sure. But I wouldn't be surprised if you didn't find anything.
Another option is maybe a corrupted tune file? Im just spinning wheels on that. Did you get a base tune to run the cam. I know the ECM is a little forgiving on that but I don't know how forgiving
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Formerly known as blk95formula
86t/a_ram_air on TGO
2018 Silverado 1500
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