I installed my headers and O/R X-pipe. Sounds like hell shooting out of my exhaust

im very happy but in much pain. K members are not lightweight and installing springs can be very frustrating. lol
I also bought the MILS for the rear o2 sensors but im still getting a check engine light.
I noticed that one with the o2 sensors was pinkish purple and the rest were green. also i had to cut the nubs on the purple sensor to get it to fit inside the MIL. Is there something that i dont know that is going on. do i need mils for the other to sensors closer to the headers? any help would be nice thanks guys and gals
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im very happy but in much pain. K members are not lightweight and installing springs can be very frustrating. lol
I also bought the MILS for the rear o2 sensors but im still getting a check engine light.
I noticed that one with the o2 sensors was pinkish purple and the rest were green. also i had to cut the nubs on the purple sensor to get it to fit inside the MIL. Is there something that i dont know that is going on. do i need mils for the other to sensors closer to the headers? any help would be nice thanks guys and gals
fav