RE: detecting peak engine temp
Mine statement that it would be below 155C was in response to TOMs answer that 155C is a good number to shoot for or stay around, It all depends on your tuning, baffling, extraction and flying habits sensor placement, etc. I have no idea of those, There are many factors that come into play, but I will say it again, I doubt you will hit 155C.
Pe was just having a little fun, that's what makes these boards interesting to read.
Next time I get to Indiana I might have to check out some of the flying sites.