The same license plate (3RPV453) is seen on both Curtis's and Sad Dogg's cars.
Sad Dogg's car has different front and rear license plates.
Wires are visible when Curtis flies up in the air after getting shot by Andre.
When "Cop #1" falls down after getting shot by Curtis, a wire (presumably for triggering the blood pack) is visible running up his right pant leg.
When Curtis says "Andre? Oh, shit!", his mouth doesn't move.
During the second car chase, the shadow of camera equipment attached to the BMW is frequently visible.