well, people do it to mainly to find out how much power their car makes. also useful to find out how good any modifications made to the car are & also to help diagnose some potential problems. not really done for fun, for that you'd be better off using the money on petrol & then going for a drive through the hills.
what basically happens is the car is put onto rollers, an exhaust probe is put into the exhaust pipe, both of which are connected to a computer. the dyno operator accelerates the driving wheels of the car on these rollers & the computer calculates the power measurements & also the air fuel ratios from the exhaust. they will usually do this 3 times to get 3 measurements & then use the highest measurement (or maybe an average) for the graph printout.
they will then explain what these measurements mean & tell you how the car is running & whether it all looks normal etc.
anyone can come along to watch, not necessary to be a participant. it is a multi car dyno day so expect lots of nissans. things like silvias, skylines, & the other japanese turbo hoon cars common in the hoon scene.
feel free to come along, same goes for anyone wanting to watch or have their car go on the dyno.
i probably will. not with MarioKart though, i already know how much power that one makes.
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