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Exhaust 5.7 HEMI Exhaust Discussion


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Old 02-03-2014, 02:55 PM
ramprincess ramprincess is offline
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Question exhaust issues

I just bought this truck and it has been coding O2 sensors. The shop I took it to says it has custom exhaust with headers. it seems that the wireless electric cutouts are making it code.
what can I do to stop this?
the exhaust and O2 sensors all check out great. but it will not pass inspection with the false codes.
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Old 02-03-2014, 10:23 PM
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Cutouts aren't your problem. Most likely its the fact that the rear O2's aren't reading properly. It's not that they aren't working its just that they have been moved because of the headers and are now reading differently than they are supposed to. You can do the nonfouler trick to fix this or get a custom tune to turn of the rear O2's

Do you happen to have to codes you are throwing? That would help to verify the problem.
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