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Exhaust Question

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Old 12-13-2009, 06:14 PM
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MidNight
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Ok i am kinda new to the f150, so im a lil ignorant. I have a 2004 F150 5.4L. When i got up under the truck there looks like there is FOUR cats on there. 2 off each header. Are all four of them cats? Anyone 100 percent sure? thanx
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Old 12-13-2009, 06:17 PM
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yea some of the early 5.4's had 4 cats, take the back two off and youll prob get the sound you want out of that flowmaster
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Old 12-13-2009, 06:51 PM
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^ x2
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Old 12-13-2009, 07:45 PM
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Originally Posted by ford4wd08
yea some of the early 5.4's had 4 cats, take the back two off and youll prob get the sound you want out of that flowmaster
Will it pass emissions if i take the back two off?
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Old 12-13-2009, 08:01 PM
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cant answer that we dont have any kind of testing around here
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