Is Tuning Illegal in California?
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Is Tuning Illegal in California?
What car mods are illegal in California? - Quora
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Motorcycles Bypass New California ECU Regulation? - Adventure Rider
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These 9 Mods Are Illegal in California
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ECU Tuning Banned in California -- We're Hosed
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How To Do a Legal California Engine Change (E-ROD LS Swaps & More!)
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California Smog Testing Will Now Sniff Out (and Fail) Tuned ECUs
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Is Tuning Illegal in California?
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Did California Really Ban ECU Tuning?
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ECU Tuning Banned in California -- We're Hosed
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California Smog Checking For Ecu Tunes Emmision Law! Vicrez Challenger 392 Widebody E85 Supercharged
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California Smog Check Cracks Down On Third Party Software Modifications
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Car tuning - Wikipedia