Randy, thanks for your recommendations. I think Louden is for people with open checkbook. Louden wants to charge $400 for the EGR valve, and got them to reduce to $253 after I told them the part is selling on line for $155. Also got billed 5 hrs. labor at $79 per hr. Posted car for sale on Autotrader.com; no rush as am enjoying the car on weekends.