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"If it was really really rich" I'd have to say that 22.4% qualifies as really really rich. No amount of catalytic converter is going to help you here. You need to start with the basics on this thing. The O2 sensor and cat may very well be done in it but you won't know until you fix the grossly over rich condition that exists. Start with a simple fuel pressure check and see where that is, at 22%+ a stuck fuel pressure reg is entirely possible. Then check yor MAF for proper operation. I'll bet that your MAF is toast and if it is make sure you check/replace the pre-heat thermostat when you put in the new MAF. Also make sure that you do not have any melting down harness issues as well, I have seen a few with the disintegrating harness that has taken the MAF or other components out with it. Bad things happen when all of your wires short together. Lastly, it is called a dynomometer or a dyno for short, a dynamo is something completely different. Thank you for letting us know that it was on a dyno though and for providing all of the numbers. It is tough enough to give you an idea of what is wrong with your car with the numbers and the correct information. Did they do a two speed test and you failed at both high and low speed?
Mark
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