honestly my car already in workshop...in progress of overhauling...huhu...
did asked my cousing opinin on this before (he's a turbo maniac guy - hands on with car laa)...
i did mentioned to him about the half cut option but he said no guarantee on the engine is ok or not (only 1 month by kedai potong) unless the workshop thmselves getting the half cut. they will gv 3 months warranty... even the halfcut for e46 still much expensive...around 15k++ i guess...