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i had a similar problem it turned out to be the cam was worn on cylinder #6 and also dod lifter would come apart on that same cylinder

would u mine sharing your stock tune file i've looked in the repository but i doubt they are completely stock

Can u update. Did it work

the long crank might be because hpfp is trying to build pressure so for a cold start it needs 17??psi

Catalyst p0420
Evap p0442,p0446,p0451-p0454,p0455,p0496
Oxygen sensor p0133,p0134,p013a,p013b,p013e,p013f p0140,p1133,p2270,p2271
Oxygen sensor heater p0030,p0036,p0053,p0054,p0135,p0141
Egr...

Catalyst p0420
Evap p0442,p0446,p0451-p0454,p0455,p0496
Oxygen sensor p0133,p0134,p013a,p013b,p013e,p013f p0140,p1133,p2270,p2271
Oxygen sensor heater p0030,p0036,p0053,p0054,p0135,p0141
Egr...

86767 i set all this dtc's to no error reported and all my readiness monitors are completed after reflashing my truck

im not a tuner but u can use this 2 tunes then u can fine tune your truck to your liking

https://patents.google.com/patent/US20110139117A1/en

https://youtu.be/CWu16iUbAis