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Old 05-19-2003, 04:12 PM   #10
84LX89GT
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A header leak can and will cause your car to run bad because the exhaust pulses will pull air in from the header leak and make the 02 sensor think it's running lean on that bank. Fix the header leak and see what happens, hopefully that's all that is wrong.
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1980 Ford Thunderbird - 255 V8
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1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc.

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1989 Mustang GT ET: 13.304@102.29 mph (5-24-03)

Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock)
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