The OEM ECU doesnt need to be 'cracked' as such. The ZOOM magazine ute (with 270Kw at the treads) runs a piggy back ECU. Works in tandem with the original unit. Yes its a XR6 Turbo but the same principles apply.
*i believe the above info to be correct, i'm sure if it isnt though, some will correct me :)*
I bet $20 Shav will hit 2000 posts by years end...