Same thing happened to me at the start....Bought the BLITz and HKS D1 cars and couldn't drift them at all!
First thing to do obviously is turn all the driving aids off...
Then change the tyres to either normal "ecomomy" or normal "comfort"depending on what power the car is making ... Doing this really helps alot making sliding more predictable and easier, though you may have to change ur style a bit.
Also playing with the suspension can help if you get it right..... Try starting with upping the stabilizers to 5 each, camber at least 2.5 and 1.5 front/rear respectively, then work on the spring rates from there.