In a nut shell mate, No. If you change gear quickly the DV doesn't even have time to react. Take it off and file it away in your garage somewhere. Unless you are running daft boost there is no need for you to have one. If you lose all the pressure in the system potentially you will have to wait longer for it to boost up as the pipes and intercooler will all need to be filled with air and that air will have to be compressed to the required level before the car will come on boost again