2004 F150 stock exhaust
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Senior Member
Joined: May 2004
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From: Sunny FL
2004 F150 stock exhaust
How inefficient is the stock 2004 exhaust?
What makes the Magnaflow cat-back exhaust system give you more HP?
Is it the muffler or the size of the pipe and how it is bent?
What makes the Magnaflow cat-back exhaust system give you more HP?
Is it the muffler or the size of the pipe and how it is bent?
