Its possible the detune (if this is the case) is for mechanical longevity (i.e. the belt as mentioned) or maybe its to limit the inevitable wheelspin that greater power would bring.
Also, PJH, your collection of photos from your recent visit are quite nice. You took shots of things which hadnt otherwise been seen at this point in photos. Thank you for sharing!
Most of the cars that I have seen are the chrome variants, but this black one looks really sharp as does the body color painted "radiator".
