Question about Muffler size
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Joined: Jun 2014
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Question about Muffler size
Hey guys,
I feel like a bit of a moron asking this question, but I'm kinda green in the exhaust field. I am wanting to put a SI/SO muffler (Borla XR1) into a Y-pipe with duals out the back. My truck is a 2009 FX4 with the 5.4L, and I believe the factory pipes measure at 2-3/4". My question is what inlet/outlet size should the muffler be? And should I have 2.5" pipes or keep the 2-3/4" on the outlet? Thanks.
I feel like a bit of a moron asking this question, but I'm kinda green in the exhaust field. I am wanting to put a SI/SO muffler (Borla XR1) into a Y-pipe with duals out the back. My truck is a 2009 FX4 with the 5.4L, and I believe the factory pipes measure at 2-3/4". My question is what inlet/outlet size should the muffler be? And should I have 2.5" pipes or keep the 2-3/4" on the outlet? Thanks.
