Finally got around to installing my Nitrous Express Plate system on my 99 GT this weekend! Daddy likes! Anyways, my brand new purge valve was leaking....... WTF!!!! I purged for a few seconds then kept on hearing a slight hiss....turns out the valve wasn't closing all the way. When i'd close the bottle valve, the hiss would go away. Anyone else have any problem with Nitrous Express's valves or any company's valves? Like I said, it is brand new. I just removed it...gonna send back...and hopefully get a new one

 

They have warranties so you will be covered and it does happen.