what turbo? yea there is a problem with the turbo... no one supplies an aftermarket turbo for the N/A crossfire if that is what you are talking about...?

and if you are talking about the supercharger that comes with the SRT/AMG crossfire than there is not much problems with it other than the IC pump failing sometimes.. and that is about all I can think off... if performance is your concern there is no reason to take the N/A over the SRT/AMG Crossfire...