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| 2004 to 2008 F-150 and Mark-LT 4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs. |
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#8
Sun, March 14th, 2010, 04:28 AM
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I am stuck on this again.. I am trying to figure out how to design the new exhaust so that I can have a tune with cats for on the road and a tune with out cats for off road.
My problem is where do I put the O2 sensors and do I do any thing to them? It seems that if I have the cut outs before the cats that I should have the O2 sensors before them both right? If so, do I do that O2 sensor modification in the thread posted ^? 
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