I just installed a ATR cold air box with the big 14" K&N filter on it. It seems that I am recieving virtually NO KNOCK with it installed. This is great but I still have a factory fuel pump installed so I was scared that I might recieve more knock because of the increase in air volume entering the motor with the same amount of fuel as before with the stock air box. I dont have a scan master yet but I have a knock detector and that is the results I have recieved so far. Has anyone experienced this also?