I had the sprint booster intalled on my RX-8. It had a button that let you change how reposive you wanted the throttle to be. From normal to aggressive. It works to a degree, but it won't make the car any faster or free revving. Cuts maybe a few milliseconds off since it's already sending a signal before your foot goes down or something about the voltage. I can't remember which. I personally don't think the Z really needs it and money can be better spent elsewhere for real power gains.
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[09][MB][6-Spd MT][Touring][Stillen Gen III][K&N][Borla CBE][Evo-R]
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