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Search: Posts Made By: fryzia23
Forum: Intake/Exhaust 05-25-2015, 12:14 AM
Replies: 21
Views: 3,502
Posted By fryzia23
If you getting lean codes from a/f upstream...

If you getting lean codes from a/f upstream sensors, I would deff have that checked out. Your car might be running lean from your mods which isn't good for the long run.
Forum: Intake/Exhaust 05-25-2015, 12:12 AM
Replies: 21
Views: 3,502
Posted By fryzia23
With any aftermarket HFC/TP you might get...

With any aftermarket HFC/TP you might get occasional catalyst efficiency below threshold. Just clear it and don't look back. Unless it keeps coming back so you could do as dislimn already mentioned....
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