1999 - 2003 7.3L Power Stroke Diesel

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Old

Mar 14, 2008 | 05:19 PM

#1

bad ass diesel

Thread Starter

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Junior User

Joined: Oct 2003

Posts: 62

Likes: 0

6637 arived today

i opened the box and thought to myself no way is that thing going in there! but 45 min later, a little choping on the old air box mounts and its in. went for a drive. i heard my waste gate dump though its unpluged. anyone know why this could be?

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Old

Mar 14, 2008 | 05:24 PM

#2

HKusp

Lead Driver

Joined: Jun 2007

Posts: 7,760

Likes: 27

From: Hampton, Maryland.

Club FTE Gold Member

If you are talking about the improved "hiss" when you back off the accelerator it's not your Wastegate, it's just excess boost bleeding back off through the intake tract.
They like to call it "Darth Vader talking to ya!!"

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Old

Mar 14, 2008 | 05:24 PM

#3

whjco

Elder User

Joined: Feb 2007

Posts: 857

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Yup. There's no air box to act like a muffler. The sound you're hearing is normal after adding a 6637.

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Old

Mar 14, 2008 | 05:25 PM

#4

superduty4x4

Hotshot

Joined: Jul 2003

Posts: 12,177

Likes: 40

From: Newport, WA

HKusp- too funny!

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Old

Mar 14, 2008 | 05:26 PM

#5

bad ass diesel

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Junior User

Joined: Oct 2003

Posts: 62

Likes: 0

no, im not i hear that too. the noise i am talking about is while driving when it goes into o/d the engine bogs and i hear the boost dump,

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Old

Mar 14, 2008 | 05:32 PM

#6

HKusp

Lead Driver

Joined: Jun 2007

Posts: 7,760

Likes: 27

From: Hampton, Maryland.

Club FTE Gold Member

The tension on the spring on your wastegate may be too loose. I'm not 100% on that. Someone "in the know" will chime in here in a few minutes.

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Old

Mar 14, 2008 | 05:38 PM

#7

Tenn01PSD350

Post Fiend

Joined: Feb 2006

Posts: 11,892

Likes: 2

From: Middle Tennessee

OD shift whoosh is the same thing.

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