01SOMZ28

iTrader: (37)

What is needed to complete the swap? A friend of mine took out his T56 and has a built 4L60E that he wants to install. Our main questions are: 1)will the PCM need to be changed out for one out of an auto car? 2)Will the wiring harness need to be changed out as well?

T AM

iTrader: (5)

The computer won't need to be physically swapped. Use HP Tuners or EFI Live to make the necessary changes to the PCM.

Big Red Z28

iTrader: (4)

You will also need the auto wireharness i got mine from lsx tune. I had hp tune and my dyno guy did the program. I think there is a sticky telling everything you need and some tips if doing it yourself.

allbaugh_04

iTrader: (6)

You can use the stock PCM, but it'll have to be reflashed

01SOMZ28

iTrader: (37)

After changing the PCM for one out of an auto car can we use the existing wiring harness with some modifying? or swap out the whole harness?

allbaugh_04

iTrader: (6)

Definitely recommended to go with a harness out of an a4 car, but the M6 PCM can be reflashed and used.

Here's a good read about it https://ls1tech.com/forums/manual-tr...requested.html