Okay just got done with a H/C/I swap stock rotating assembly. I have about 150 miles on the car and a hour or two of idling. I've noticed that oil pressure is good on start up (idle issues of course) however as I drive around and warm the car up. When I get to low speeds or red lights my oil pressure on the stock gauge drops to low or nothing. If I feather the gas it comes back up and when I'm driving its normal. I'm not sure where to begin looking. Thanks!