Turbo back vs. Cat Back - Ford Powerstroke Diesel Forum
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Old 11-10-2013, 03:07 PM
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Turbo back vs. Cat Back

Next on my to do list after intake is exhaust, I was looking at diamond eyes. What are some pros and cons of turbo back and cat back systems. Also straight pipe or muffler?

Any advice on tips or is it more of an appearance thing?
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Old 11-10-2013, 03:54 PM
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If you don't live anywere that its gonna be a emission inspection issue Id say go for a turbo back set up. You might as well get the cat outta there and free up the exhaust as much as possible.
Im running (on a 6.0) diamond eye's 5" turbo back straight pipe set up. Was very easy to install and its not as loud as you would think. On a gasser it would drive you out of the truck.But in the 6.0 is pure mechanical music.
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Old 11-10-2013, 04:07 PM
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How do you know if the inspection will be an issue, I live in Wisconsin
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Old 11-10-2013, 04:13 PM
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If you live near Milwaukee you might have issues if you remove the cat...
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Old 11-10-2013, 04:24 PM
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Call your local dmv or visit your friendly smog guy to find your inspection rules. They should be able to tell you what you need based on your vin and underhood markings
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Old 11-10-2013, 04:44 PM
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am I the only person who's never seen a 7.3 with a cat

when you bought it did you have to get it inspected for emissions, I would guess not being in Wisconsin. If not get a turbo back kit.
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Old 11-10-2013, 04:56 PM
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I forget who told me but someone on here said autos did not come with a cat therefore they won't be required for inspection but SOME manuals did. That's for for thought, I cannot say wether it is fact or not.
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Old 11-10-2013, 05:32 PM
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My E99 came with a cat and it is an auto.
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Old 11-10-2013, 05:36 PM
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Like I said, just what I heard, apparently that was wrong.
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Old 11-10-2013, 05:54 PM
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My 01 auto didn't have a cat. I recommend turbo back if allowed as the stock downpipe is more restrictive than the turbo back with larger downpipe.
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