Scotty...love the show! I have a 2010 Toyota Corolla Le with 85,000 miles. The car runs like a champ. I decided to clean the MAF and after doing this...my check engine light came on...along with my VSC light flashing. My traction control light came on as well. I pulled up the code with my OBD2 and it was for catalytic converter inefficiency. The car does not skip a beat...no loss of fuel mileage. I also modified my intake at the same time. I'm thinking I could be running lean because of it. Any ideas on what could be the issue? Also...what do you think of Pennzoil Platinum Full Synthetic??

do not modify an intake system, it will trip codes then, anything past stock messes with computer software. And that is a very good, though expensive, oil.