If you were really being chased you would be too glad your limbs are all still attached rather than carrying on about losing your licence.
As Brendan said it sounds like you're learning the hard way. There are rules, break them and there are consequences. "but but, I have an HSC exam to drive to" doesn't cut it, if I was a magistrate who heard that I'd tell you to catch the bus. You should have gone to a lit area, a cop shop, a servo or called the cops. What will speeding do if you get chased? The chaser will speed too. Now you have two cars screaming through the streets - it's probably the dumbest thing you can do, no offence. You're still young and learning, just make sure you DO learn or you'll just continue making life more difficult than it needs to be.
As for 17 year olds doing 30km/h above the limit in a suburban area, I don't approve of that at all. There's a reason why you've lost 7 points, and it's not "because life's unfair". Think about it.