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Best aftermarket cat

   
Old 01-09-2015, 03:47 PM
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Default Best aftermarket cat
Well I've got the p0420 code popping up on my 04 lariat and gas mileage is getting worse so I was wondering what the best aftermarket replacement would be. Any suggestions would be greatly appreciated. Thanks.
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Old 01-09-2015, 04:53 PM
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Magnaflow that what I heard around here
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Old 01-09-2015, 10:08 PM
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Maggy High-Flows
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Old 01-16-2015, 09:02 PM
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what is the best way to put in hi flows and not get an engine light (cant tune it out because I have to pass inspection)
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