I got permits for pod, BOV, intercooler and my stock pedals...cos a cop "questioned" them once, so I didnt wanna take any further risk with them.

I had a permit for my BOV but I still got a yellow sticker for it. If you have a permit and you get a yellow sticker for the permitted item, head down to the police station of the officer who gave you the sticker, and argue it with his boss....thats what I did, and I got the sticker off.

You can have as many permits as you like, but it will never mean that you wont get any yellow stickers!

Mat: The Police are trained to send you to the pits if something on your car "seems" illegal or non-standard, and if they dont know any better, they'll send you to the pits to allow someone who does know better, to inspect your car.

Its the biggest downfall, because they can not know a thing about modified vehicles, so they'll send you to the pits for that very reason!