Info needed on exhaust - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 11 (permalink) Old 03-24-2010, 03:22 AM Thread Starter
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Info needed on exhaust

Iam new here and need help.I bought a 05 6.0 and took the factory exhaust off and replaced it with a MBRP staight pipe 4in turbo back. I had a ICP fail and after they replaced it the turbo locked up during their test drive. I have the diesel care plan so ford fixed the problem. but they are telling me that it has to have back pressure cause the turbo is taken in cold moist air everytime its turned off. And that its going to do the same thing. Question being does a diesel have to have back pressure?
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post #2 of 11 (permalink) Old 03-24-2010, 04:32 AM
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Re: Info needed on exhaust

No backpressure

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post #3 of 11 (permalink) Old 03-24-2010, 05:55 AM
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Re: Info needed on exhaust

Thats the Stealership for ya

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post #4 of 11 (permalink) Old 03-24-2010, 12:26 PM
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Re: Info needed on exhaust

The motor itself has plenty of backpressure thanks to the turbo, turbo wants to be free flowing exit. I have a 4" downpipe and 5" exhaust from there back and have no trouble, wonder how the dealership would explain that, and plenty of others running the same exhaust setup.

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post #5 of 11 (permalink) Old 03-24-2010, 12:42 PM
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Re: Info needed on exhaust

I have had a 4 inch straight pipe on my truck for a year and a half with no problems what so ever. Sounds like the dealer was playing the blame game.
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post #6 of 11 (permalink) Old 03-24-2010, 03:33 PM
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Re: Info needed on exhaust

Quote:
Originally Posted by kris81 View Post
Iam new here and need help.I bought a 05 6.0 and took the factory exhaust off and replaced it with a MBRP staight pipe 4in turbo back. I had a ICP fail and after they replaced it the turbo locked up during their test drive. I have the diesel care plan so ford fixed the problem. but they are telling me that it has to have back pressure cause the turbo is taken in cold moist air everytime its turned off. And that its going to do the same thing. Question being does a diesel have to have back pressure?
Time to find a new dealer.
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post #7 of 11 (permalink) Old 03-24-2010, 04:37 PM
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Re: Info needed on exhaust

Quote:
Originally Posted by DSTRBD View Post
Time to find a new dealer.
+1

I've been running a 4" turbo back exhaust (straight pipe) for 115k miles and have never had a turbo lock up (knocks on wood).

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post #8 of 11 (permalink) Old 03-25-2010, 01:25 AM Thread Starter
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Re: Info needed on exhaust

Thanks for the help guys
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post #9 of 11 (permalink) Old 03-25-2010, 02:46 AM
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Re: Info needed on exhaust

guys you realize there saying the veins are rusting correct....!!


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post #10 of 11 (permalink) Old 03-27-2010, 03:07 PM Thread Starter
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Re: Info needed on exhaust

Thats what they were telling me that the veins were going to rust and cause my turbo to lock up. There telling me that the backpressure is what closes the turbo down so it doest suck in the cold air.
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