I did the 4.2 swap and I am very happy with the swap.
The issue I have is I keep throwing CMP/CKP engine light code
Background 4.2 V6 changed flywheel, balancer, CMP and CKP from 3.8
I did extend the wiring on those two sensors, everything checks out on continuity,
I have made a lot of changes, dual exhaust, cold air intake, new fuel injectors and fuel pump.
I have not had a tune and was wondering if the computer might be overwhelmed with all the changes???
Any help is appreciated.Thanks everyone on this site has always been great!!!