I had some erons to run today and was driving the truck so I started to accelerate from a stop and gave it a little gas after i got up to speed the ses light came on so I pulled over and checked the codes 2 were in there p0172 and p0175 bank 1 & 2 rich I cleared the codes and started driving again I drove for a good 30 min and the light never came back on but as soon as I gave it gas again the light came back on with the same codes this time I could tell the engine was not driving the same a little slugish and when I came to a stop hard it would sputter a for a sec (my idle is set to 800rpm) its now too late to start looking for problems eventhough I want too I took a quik look under the hood but didn't notice anything I filled up with gas 45min before this happened but it was BP gas 93 octane unless I mistaked the 93 for regular. What do you guys think I should look into first ? Im realy bummed out about this it sucks to have to post something like this so any help would be appreciated I just hope its something simple and Im not going to need a new engine