5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

check engine light

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Old 05-03-2009, 05:27 PM
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nitrous_fed_03gt
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Default check engine light

if your running your stock o2 sensors with an o/r h pipe, and since your going to get a check engine light, will it make your car run any different, or throw the computer into a safe mode??? i know i can turn it off with a tune, but i havent reached that point yet. thanks
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Old 05-03-2009, 06:50 PM
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AdderMk2
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you wont get a CEL in a OBD-1 car from removing the cats.... this isnt a 4.6l
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Old 05-04-2009, 03:00 AM
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mostdef
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said that beautifully... youll have no problems with 02s running no cats
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