2000 Ford Mustang GT Kooks Headers And X-Crossover
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The new Kooks X-crossover includes 02 sensor bungs for those who are running catalytic converters. If that is the case, then the rear 02 must be employed. Those who are running without cats, for off-road use only, the rear 02s must be turned off in the tune and the bungs plugged. View Related Article
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