Question on cat delete. - Ford Powerstroke Diesel Forum

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post #1 of 14 Old 08-06-2010, 01:45 PM Thread Starter
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Question on cat delete.

I talked to a shop today that was pushing Black Maxx pretty hard. He said to just delete DPF and leave cat on. What is the advantage or disadvantage of doing this? I was understanding that it was better to take them both off.
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post #2 of 14 Old 08-06-2010, 01:51 PM
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I see no advantage to leaving it on. It is illegal to remove the DPF so leaving the cat on wouldn't save you any trouble I don't think.
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post #3 of 14 Old 08-06-2010, 01:54 PM Thread Starter
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That's what I was thinking too. He said that without it, the turbo wouldn't spin up as fast. It looks to me like the less backpressure you have on the turbo, the easier it will spin.
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post #4 of 14 Old 08-06-2010, 01:58 PM
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Originally Posted by Dino96 View Post
That's what I was thinking too. He said that without it, the turbo wouldn't spin up as fast. It looks to me like the less backpressure you have on the turbo, the easier it will spin.
Trust me the turbos spool up plenty fast enough with it off. Not sure they would spool any faster with it on anyway. Tuner, DPF/DOC delete and intake and these trucks are crazy fast.
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post #5 of 14 Old 08-06-2010, 02:02 PM
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He either has no idea what he is talking about or doesnt have access to proper delete pipes.



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post #6 of 14 Old 08-06-2010, 03:00 PM
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There is no real reason to leave the CAT on other than its cheaper to buy the pipe. We always recommend doing them both.

Sales @ Rudy's Diesel Performance
*CONTACT US FOR SPECIAL PACKAGE DEALS ON SPARTAN, SCT AND H&S PERFORMANCE DPF/CAT DELETE KITS*
(919) 383-9300 OR Toll-Free # 1-866-757-6537

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post #7 of 14 Old 08-06-2010, 03:12 PM Thread Starter
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Thanks Aaron. I will be giving you a call soon.
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post #8 of 14 Old 08-06-2010, 03:17 PM
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Do them both!

Jeff Dodd
spartan_jeff12@yahoo.com

2012 Ford F-250 Lariat CC/SB

Mods - Spartan tuned via laptop, 4" AFE stainless exhaust system, 2.5" PMF BMC leveling spacers, 3" PMF lift blocks, Fox Racing 2.0 shocks, Recon smoked mirror & cab lights
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post #9 of 14 Old 08-06-2010, 03:24 PM Thread Starter
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Do them both!
That's what I had planned. I thought if he was reasonable enough I would let him do it, but it was going to run $2100 so I will install it myself.
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post #10 of 14 Old 08-06-2010, 03:33 PM
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Definitely a good plan. It's not a bad driveway/garage install to tackle. It will save you a lot of money doing it yourself.

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spartan_jeff12@yahoo.com

2012 Ford F-250 Lariat CC/SB

Mods - Spartan tuned via laptop, 4" AFE stainless exhaust system, 2.5" PMF BMC leveling spacers, 3" PMF lift blocks, Fox Racing 2.0 shocks, Recon smoked mirror & cab lights
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