No, the tweak will be released for Patch Y but on the same time Patch Z will be released. This happend a while ago. We had Patch X but no tweak. Most of us used patch V tweak instead of waiting.
I saw a vid on youtube of a tweaked UFR... I thought you couldnt tweak them??
If anyone could tell me how that'd be gr8!
(by the way, tweaking the XRG to a straight 6 and editing the sounds a bit makes this car have an amazing soundtrack)