Sorry to be such a ...newbie
It's stock other than K&N filter and a flowmaster mufler.
Today it threw me for a loop when I got on it kinda hard. Ran it to about 5 grand and then valves started chattering, blew smoke behind me and threw the SES light. I took it to Advance auto parts and they scanned the code "PO405 EGR flow sensor A Circuit low input" they couldn't tell me what that meant. It was also a quart low on oil and inside the oil cap was a kinda Yellow sludge. It's never used oil before. Always changed every 3000m and up till I found this site I had used Fram filters (AC delco from now on)
I don't have any idea where to start. Hate to go to dealership too $ hungry.
IDEAS?? Thanks

