I have a CEL that is coming back quicker and quicker after I clear it each time. P0130 and P0150. A lot of forums are saying to just replace the sensors while others are saying there is a vacuum leak somewhere and some are even saying the purge valve could be stuck open. I have a Hypertech "Regular" tune uploaded on the truck but its been running fine since it was uploaded almost a year ago. I don't get the worst gas milage but 13 MPG isn't the greatest either. Is it worth it to take the truck into the stealership for TSB 12-6-16 even though I have the Hypertech tune? Or just replace the O2 Sensors regardless? Or keep searching? 2010 F150 Lariat 4x4

So I cleared the CELs and plugged in my SCT X4 Tuner so I could read my AFR live for both banks. Both O2 sensors are reading properly. The truck is running around 13 but goes as high as 15 and as low as mid 10s occasiaonally. When I take my foot off the gas for more than 3 seconds or so, it spikes to 28.13 for about 4 to 5 seconds and quickly returns to 13. No CEL so far and still no performance issues. I called the dealer today but have heard nothing from the them yet. Still not sure what direction to go with it. As of now I’ll get it to the dealer as soon as they can get me in.