Got a 14 ram 5.7 I did the mds delete from Texas speed the first week of driving no tap at all but after a week it started tapping and it threw a p000b i cleared it to see if it comes back after 2 weeks it hasn't like i said only when it warms up, like in the morning when first starting no tapping even after 10min I put 5w30 oil in it because I live on the south and plus I use it in my 04 hemi with no issue at all