I've been thinking about your new info all day and my hurd hets, I mean my head hurts.
It's not like we are in a back to the future movie where "when this baby hits 58 MPH, watch out."
These are the two things that I can think of before my head explodes.
1, the EGR valve is opening up and not closing fast enough. (You can disprove this by running with your EGR unplugged for a few days)
2, you have high compression from carbon build up and are getting detonation after a lean cruise on the highway. (You can disprove this by running the fuel tank almost empty and then putting in a 1/4 tank of premium octane)
Tuesday, December 8th, 2009 AT 11:50 PM