gday Billy22bob !
No , i did not have to have the ECU tuned to accept the new Tcu.
i am using the new tuned Tcu with the original eurocharged tune on the ECu.

But, I am presently waiting for Jerry to send a new tune for my Ecu as i now dont have rear cats and theres a big x-pipe in place of them since the last tune. Hopefully Jerry can get some more powerout with this new tune.
dave
Ps , OT but i ran 2 tanks with Techron 5000 in and it actually does feel better!.
I want to try some Seafoam cleaner in it too now .