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My 911 Carrera 3.o goes to Bob Watsons' for a dyno health check. I wanted to make sure my AFRs at the top end were healthy - I had problems last few times so felt they were cured. All checked out OK but losing power at the top end - ended up at 186bhp, down from 202bhp last time out. I think some of the curve's flatness (can just see it in the vid) is exhaust related, but could be a number of other things. Compression numbers were all good when I bought it though. The rebuild cometh.