Do you have an aftermarket exhaust? They checked the dB of mine and lucky mine was quiet so they let me pass. had to rev the engine to 3,000 RPM. I also put the stock airbox in to lower the noise.
They also checked my hicas lines etc, Upper control arms (always the 1st thing they check on the 32), and Radius Rods (castor). They'd do the same to your car
Also make sure all the lights, demisters are working or they'll reem u 4 it.
Do you have an eye level rear brake light?
TT- just disconnect the interface and hide the harness, pretty sure if the popo didnt see it, regency wouldnt check for it. That's if you hid it
Ill be more than happy to go through things with ya, just PM me. (ive been through regency quite a lot haha)
Andy