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youtube will show you how to use tune setups from time trials if your unsure if your not sure how to tune your car or want a quick setup go into time trials and load a ghost for the course you are getting beat on and load the fastes ghost to have laped that track and usualy that tune setup they used is reasonable. its all a balance of track versus tune versus driving ability. if there is a long straigh and your not keeping up raise the final drive to give you a higher top speed and do your catching up on the long straight. depending on the track some people use a lower final drive giving you faster acceleration this will mean on a long straight you might end up with a lower top speed and cant keep up but if there is not a long straight lower the final drive as you wont reach top speed anyway.
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Its possible to have the same car with severall different setups.
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