[Porschedave]

Hi

Thank you for that clarification. It seems to me. then, that my WUR has an issue. The current situation arose as I drove home from a DE day. The car ran fine all day. On the drive home, as I was on I5 there were a couple of large backfires that I associated with taking my foot off the gas. I stopped at a rest place and the car barely idled. However, back on the I5 at 3200 rpm the engine ran fine. I checked timing and the usual culprits but all looked good. I measured my pressures and found the system pressure was 4.7, the cold control pressure was 2 at 20 degrees C and the warm control pressure rose to 3.4 after about 2 minutes. However, the engine continues to backfire and run rough. I guess my question, then, is whether this resistance issue has made the engine run too lean and hence the backfire and idle issues. And I see at Pelican that you cannot purchase a new WUR so what are my options? Oh, and this is an 090 WUR from a stock '83 engine.
Thanks for helping.

Dave