Ask some of the old F-1 pilots how many engines they melted
I used to figure on at least one melt down per contest. Sometimes you got lucky, but sometimes you would hear a lean run and not know it was your engine until it was too late (3 or 4 seconds). The big difference however with sport flying a fast airplane and racing is that you can take-off richer and monitor the engine performance as it comes to peak. As soon as it starts to strain, shut it down. Racing is a bit more cruel if you are in the points chase.