highflow exhaust
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Joined: Oct 2002
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From: olathe johnson
highflow exhaust
hey ford friends,i need a little help on my 1994 ford f250 4x4.i recently installed a walker catalytic convertor and flowmaster mufflers,my problem is the check engine light has been on since.i have ran the systems check a code 40 appeared,my book shows no #40.i have been chasing this for a week with no luck.can any body help.
