05 Exhaust - Turbo Back w/ stock Cat? - Ford Powerstroke Diesel Forum
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Old 11-09-2009, 04:38 PM
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05 Exhaust - Turbo Back w/ stock Cat?

I live in Idaho so I am not sure if I can get rid of the cat due to emissions testing. Any info? Also I was told that running the turbo back 4" causes a lot of rattle due to lack of space. Has any one else had space/rattle problems. If I can't get rid of the cat is it even worth doing a turbo back?
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Old 11-09-2009, 11:17 PM
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I have a Banks Turbo back with no rattle problems!
I have a test pipe in place of my cat so I can reinstall it fairly easy if I need to.
I think it is still better to do a turbo back even with the cat because it will still help the overall flow out of the turbo for lower egt's.
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Old 11-10-2009, 06:28 AM
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Like gregs said, it can still lower egt's. My 4" AFE TB exhaust doesn't rattle. If your really concerned with this then look for a TB exhaust that has a 3.5" downpipe (if anything that is where the rattling would probably come from).
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Old 11-10-2009, 06:31 AM
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i can make you a great deal on the exhaust you are looking for... as for the noise you refer to, I had some noise originally when I installed my exhaust, and then I twisted the downpipe a little and the noise went away... the super super cheap kits tend to be the ones that make the noise because space for the DP is limited.. as long as you have a reputable name exhaust you should be fine.....
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