so we had some difficulty with my previous motor according to my service warranty inspector it was a wrist pin fail , so moving on i was able to obtain an L83 same year as mine used but with only 12k documented miles, so heres my question i plan on disabling afm but will not be deleting lifters, cam ...

lew has the data

the tpsm code is resolved i had a tire pressure sensor go out i got a new one had it installed and its resolved . the cat codes p0420 and p0430 was perplexing they were pretty consistent in canned tune but after running 100 octane 11.999 $ a gal lol and running the diablo octane tune it ran great no ...

grasping at straws right now ive done a full afm delete on a 2018 chevy silverado 1500 it all went very smooth sdpc kit with a 6.2 cam upgrade we cant get rid of 2 codes p0430 and p0420 cat type shit the o2 is within spec up and down as are the cats, so we removed tune altogether and ran in manual ...

well im incredibly frustrated over this!
ive put about 100 miles on truck in stock and no codes other than the tpsm which apparently isnt related to anything.so whats my next move ?

thank you for the quick reply i appreciate it

we figured it out we did an full scan on a snap on scanner and cats and o2 up and down stream and all were within specs with tune removed , so far after about 75 miles in stock theres been no trouble codez but we will run it for a few days first

what happens if the cat codes go away

thanks for the reply, how do i remove tune while still maintaining afm disable, its fully deleted mechanically

im getting the same codes in a 2018 chevy silverado 1500 , had no such problems , until mechanical delete and afm disable , so how do they go bad in one week

im still getting p0430 and p0420 and they pop up in a weird way they will simultaneously pop up with the tire pressure monitor sensor im not a tech but my dude is super sharp and hes baffled it runs strong with the canned tuned but i need to figure this out before logging for lew , ANY feedback ...

no it was an intake leak and the map sensor we changed map and installed new manifold gaskets, and a pcv wasnt fully locked in , its night and day , looking forward to data logging and lews custom tune

2018 chevy silverado mechanically deleted afm and disabled in i3 , new cam , lifters and trays , it was running excellent in lieu of a custom lew tune after the break in period but its now throwing codes p0430 and p0