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Audi A4The Audi A4 model offers nimble handling and performance that makes it one of the leading cars in its class. Read more about the Audi A4 in the Audi A4 review.
its mainly for turbo cars becasue of the boost guage but u can use the ohter functions such as RPM, TPS, EGT but it seems u still have to pay for the boost sensor though