heya craig!! do you need to go to the rta to get an emissions test done?! I've been there before.... got defected twice... had to go through the whole emissions test process too!
you will need to book at the rta.. and from memory will have to wait awhile for a time slot!!!!
I found the emissions test was the hardest one to pass... a skyline stock doesn't pass the damn thing! don't know how a modded one is expected to!!!! I restricted my exhaust the first time to try and pass, and the second time i took my tuner... so yeah.... all up it took me about 4 - 6 months to clear... was aweful as the second time, i had to put my car back to stock pretty much!
Also... after my first round of defects i put everything back on... the second time (a year later) the epa took me to court... so just be careful!