can I use an after marked catalytic converter

2004 FORD F-150
225 MILES
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EMBONE
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Are after market catalytic converters for 2004 f-150 5.4l 3 valve 4x4 are as good as what comes stock, or from dealer. names like magnaflow, walker, etc. seem to be popular.and do you like the idea of using a after market performance chip ,throttle body spac need little advice
Oct 23, 2011 at 4:59 AM
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ASEMASTER6371
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no. bosal is the only aftermarket that keeps the light out other than dealer parts. thats why they are expensive and the aftermarkets are cheap.

Roy
Oct 26, 2011 at 9:17 PM
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WRENCHTECH
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We install aftermarkets every day of the week and it is very rare for them to set a code or have a problem after installation. There are a couple of applications that require a larger capacity Cat but those exceptions are rare. Just make sure it is an OBD2 converter.
Oct 26, 2011 at 9:43 PM
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