Thats not true Matt..
You cant get demerit points for having a pod, exhaust, bov, etc..
The only time you would get demerit points from defects is when you are given a minor or major defect notice and drive around after the allocated time given by the police officer to clear up the defects.. if you get caught driving around without clearing the defects, thats when you get hit with demerit points..
Hope that clears it up for you