In my experience, even if the police conduct a search illegally or without consent/pc, its best to say nothing and just let it happen. I've been arrested after denying concent, yet they search anyways and found something. Anything they've found on me that was incriminating was dismissed, the evidence suppressed. It's happened twice.
There was one instance when i was a teenager, partying in a parked car and two police officers pulled in behind us telling us to get out of the vehicle. We did not. They threatened to search the vehicle, we denied consent. Then one of them said if we dont let them search, they'll call a canine unit to rip the car to shreds. We said nothing and stayed in the car. After some minor smack talking on the officers part, they left us alone.
There was one instance when i was a teenager, partying in a parked car and two police officers pulled in behind us telling us to get out of the vehicle. We did not. They threatened to search the vehicle, we denied consent. Then one of them said if we dont let them search, they'll call a canine unit to rip the car to shreds. We said nothing and stayed in the car. After some minor smack talking on the officers part, they left us alone.