OK so i have heard that they are Fraud and after thinking about it for 75 bucks they would be. But curious i was reading some other forums and they were all talking about how ba dit was but they were talking about it being on fuel injection cars. now if its in the air intake on the car then by the time the air passes the fins It may spin but by the time the ari gets to the motor it wuld be spining anymore. plus the fins trying to get the air to change direction would constrict airflow. but one guy finally got smart and starting about the old carb motors. if you put it inside the filter right about the carb intake. would the air comin through the filter automatically start spinning and eventually spin through the Cyclone and straight down into the carb. just seeing what other peoples opinions are on this topic