Hello Gents ,
Currently have a vehicle which I had tuned previously using COS 04140003 (VZ 5.7) , owner has upgraded 4L60E to a 4L80E, I am aware of segment swaps requiring same base OS prior to switching to COS , but nil matching OS is available (12592433) .

My question is - has anybody successfully carried out segment swap post COS or any other method , Im looking at adding CAX to add Transmission selection as per HPT ...But am still unsure if that work either .


I dont really want to retune using HPT to make this work as EFILive is a much better product ....


Any help would be appreciated .


Cheers
Kyle