Right, lets start at the top. What modifications are you running for stage 1?
Have you checked your DV, PCV and cam follower to make sure they are all functioning properly? Done a recent fault scan/health check?
How do you know the other car was a DGS model? As mentioned, there's no way of knowing for certain if the other car had a stock system.
Tyres could be a crucial part too, rubbish budget tyres will not be able to lay the power down.
Non of this is intended to sound rude, just curious for facts...