p0190

I recently got a 2001 Mustang GT that came with an SCT tune and the tuner itself. For the most part the car runs great, but I get an intermediate P0190 code and the car runs slightly poor while its on... but the code goes away within 24 hours. I want to return the car to stock before I further...

So I have a 2001 Mustang GT that has been throwing me the P0190 code on and off since I got the car a few weeks ago. Sometimes the car will start perfectly fine and have no CEL, but other times the car will start and the rpms will be low. When this happens, the rpms usually raise back up and...