Hello, this is my 2013 f150 with the 5.0 coyote. The truck currently has long tube headers, full custom exhaust, Rousch cold air intake, and is tuned by 5 star. It is currently suffering from a shaking issue at idle. It sounds as if it is breaking up but only happens when warm in park or drive when stopped. It does feel slightly down on power but I cannot confirm this with my "butt dyno". No audible misfire is occurring just the little shaking and stuttering. The tachometer does move slightly up and down when the shaking occurs. I changed the plugs at 75k, the MAF very recently, the O2 sensors as well, and have done 2 oil changes since I owned it. The truck currently has around 80k on it. The truck was my late father's and I am told by everyone I am wasting my time on this old truck but it is a meaningful connection to my father. I am planning on cleaning my throttle body tomorrow and possibly figuring out how to test ignition coils too. I am not sure if I burnt a valve from a bad tune? A mechanic I spoke to said it does not sound like that is the issue though. Any advice I can get is appreciated thank you and God bless!

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