Well after a few weeks of not being able to work on my car, partly due to the fact I broke my only ignition key (DOH!) and also partially shaving the tip of my pinky off with a power planer (ouch!) I am back in the game. I'm happy to say I got a new key cut by Rob Grady and I'm getting back into working on my car (doing very small things until my finger recoups). Anyway here's the deal: I can start my engine with no problems but it does have a slight back firing problem in the high RPM's. I know it can be anything causing it but here's what's happening....I don't think my Frequency Valve is not functioning...I don't hear it buzzing while the engine is idling or when I rev the engine up...could this be what's causing my backfiring problem? Also...when I connect a DWELL meter to the diagnostic plug (to the same circuit that's for the Frequency Valve) I don't get any readings (as one website describes and a few Bosch K-Jet repair manuals say)...could I have a faulty computer?? Also another strange thing...I let my engine idle for a few minutes today....when I went to turn the ignition off the engine was still running after I turned the key to the off position and removed the key. I thought maybe there was something wrong with the ignition switch so I unplugged it....engine was still running. I next removed the RPM relay knowing that it would stop the fuel pump and kill the engine...that stopped the engine. This was the first time this had ever happened. I should note that my muffler is currently off the car and is probably not giving the required backpressure for the engine...the CAT converter is on though. If anyone has any info...feel free to email me. If it was under different circumstances i would be diagnosing the entire system from top to bottom but I have to do minimal things and not fool around with the fuel system to much, I don't want to get gas in my wound...that would burn like a mother...anyway....any info would be appreciated. Thanks, Steve