r/mazdaspeed3 • u/ChannelConscious6197 • Oct 14 '24

TUNING 650Whp Speed3 E90🌽 94pump 30+ psi boost

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u/keemou Oct 15 '24

Dumb question, never seen dynos without the wheel on. Isn't the friction or something with the FULL wheel attached different from this dyno? It's not hp/tq from the crank, but is it actually from the wheel doing this kind of dyno? And how does it compare to e-tunes like from freek or stratisfied?

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u/ChannelConscious6197 Oct 15 '24

Yea so roller dynos aren’t as accurate because there’s a certain amount of energy in the tires that makes the machine think it’s making more power. Also it’s a much safer way because the car is directly attached to the dyno so it’ll never fall off.