Cat Delete problems - Ford Powerstroke Diesel Forum
6.0L Performance Parts Discussion What has or has not worked for you?

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post #1 of 19 Old 07-13-2010, 06:00 AM Thread Starter
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Cat Delete problems

Was thinking of getting a new exhaust with a cat delete on my '05. I read in an article somewhere on teh internets that Ford recommended not doing a cat delete (of course) because the turbo would start generating boost at idle. Anybody out there who has done a 6.0 cat delete have any problems with this?

2005 F250 FX4 6.0 Powerstroke CC SB; No Cat; High Idle Mod - TOTALED!
2005 F250 Lariat 6.0 Powerstroke CCSB; Scangauge II

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post #2 of 19 Old 07-13-2010, 06:06 AM
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I don't know what the big deal would be if it was making a little boost at idle my cat has been gone for about 25k and haven't had any problems with it being gone and I love the sound without it!



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post #3 of 19 Old 07-13-2010, 06:12 AM
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Ditch the cat you wont have any problems.

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post #4 of 19 Old 07-13-2010, 06:23 AM
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How the hell would eliminating the cat cause the engine to build boost at idle

Mines been gone for 50k miles No boost at idle. No issues whatsoever

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post #5 of 19 Old 07-13-2010, 07:35 AM Thread Starter
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What I thought too. Didn't really see what the problem was, sounded to me like the typical manufacturer line of "We built a perfect truck, why would you mess with it?"

I thought a little boost at idle would be a good thing, not as much turbo lag if it had a head start.

2005 F250 FX4 6.0 Powerstroke CC SB; No Cat; High Idle Mod - TOTALED!
2005 F250 Lariat 6.0 Powerstroke CCSB; Scangauge II

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post #6 of 19 Old 07-13-2010, 12:25 PM
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No problem, ditch it.
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post #7 of 19 Old 07-13-2010, 03:15 PM
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No problem, ditch it.
x2. I did mine 2 days after I bought it and no problems.

Well; if you think more whistle from the turbo is a problem, you might have that
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post #8 of 19 Old 07-13-2010, 11:47 PM
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Yup. Ditch it. My truck makes boost at idle with all the smog gear on it -- it's a 2008 though.

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post #9 of 19 Old 07-15-2010, 05:36 AM
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I'd love it if my truck made boost at idle.
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post #10 of 19 Old 07-15-2010, 10:15 AM
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Last month I installed an MBRP 4" turbo back and deleted the CAT at the same time on my 2006 F-350 4x4. The only "problem" I have incurred is a 2 to 2.5 MPG increase empty at 60 to 65 MPH open highway with 3.73's. I was getting around 17 to 17.5 MPG, last tank I got 19.6 MPG hand calculated. My towing mileage increased about 1 MPG. These are the only "problems" I have noticed so far.

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