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2 cats or one?

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Old 08-24-2016, 11:12 PM
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Default 2 cats or one?
Upon looking under my 08 f150, I couldn't help but notice where the exhaust comes together before the muffler. I had a knockoff Flowmaster muffler installed, itso called flowtech. When I looked closers at the system, the pipes come together just before the muffler. Can someone tell me if there are 2 cats, or just one, with my setup? I guess I could have snapped some pics for the discussion, but didn't for now.
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Old 08-25-2016, 05:40 AM
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Stock 08 5.4 3v has 2 cats
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Old 08-25-2016, 07:08 AM
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My cobra had 4 cats. A full exhaust (headers, x-pipe, 2 free flow cats, and 3" cat back) gave you 30ish hp AND saved you close to 50lbs. Is there a reason ford seems to over engineer their exhaust system?
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Old 08-25-2016, 09:03 AM
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I believe an 04 and 05 5.4 3V has 4 cats
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Old 08-25-2016, 09:42 AM
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Originally Posted by techrep
Stock 08 5.4 3v has 2 cats


Thanks techrep, am thinking about a true dual exhaust hut wasn't sure if I needed to buy a 2nd cat. You nay gave saved me from unnecessary spending.
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Old 08-25-2016, 10:05 AM
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They switched to two cats mid 2005.
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Old 08-28-2016, 01:15 PM
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pretty sure my 04 XLT only has 2 cats..
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Old 08-28-2016, 02:12 PM
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Must by a 6 cylinder
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Old 08-28-2016, 03:07 PM
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Yeah Justin in pretty sure my 04 xlt has 2 I've got the 5.4
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Old 08-28-2016, 08:01 PM
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Originally Posted by Eric McLeod
Upon looking under my 08 f150, I couldn't help but notice where the exhaust comes together before the muffler. I had a knockoff Flowmaster muffler installed, itso called flowtech. When I looked closers at the system, the pipes come together just before the muffler. Can someone tell me if there are 2 cats, or just one, with my setup? I guess I could have snapped some pics for the discussion, but didn't for now.
My 08 has two cats. One on each side
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