Quote Originally Posted by JoelW98GTP View Post
I had an open cone on my car before the fwi and it seemed very sluggish going through town in stop and go traffic. Running down the highway for a few miles after the underhood temps went down it seemed to run great. My opinion is that my car runs better and is more consistant with the fwi than with the open cone. It seems to run the same whether I'm in town or on the highway. I couldn't see any benefit of my engine sucking in 150*+ air into my engine. Just noticed the negatives of it breathing the hot air coming off my engine.
Because your not running enough boost to benefit from the open cone.