WHAT IS THIS SOUND - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 3 (permalink) Old 12-13-2012, 03:13 AM Thread Starter
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WHAT IS THIS SOUND

Recently developed this sound only under boost from 9psi up to 20psi and it gets louder as the boost increases? any help would be appreciated.. only mod is a DP Tuner. http://www.youtube.com/watch?v=avCua...yer_detailpage

2003 Excursion, 4 " exhaust, 33" tires, leveling kit, DP tuner chip 60 tow, 80 tow, 80 econo, 120 race, Autometer GS gauges, overhead pods above mirror
:splat
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post #2 of 3 (permalink) Old 12-13-2012, 06:28 AM
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Do you have a boost gauge? I am assuming you do since you know what psi it is doing it at.

Is it holding boost or leaking it off? What is the max boost you can make?

Sounds like either a leak or the wastegate. You can do a boost leak test to check for leaks.

Also, what kind of air filter setup are you using?

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post #3 of 3 (permalink) Old 12-14-2012, 12:11 AM Thread Starter
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Justin, Thanks for the reply.... Yes the truck has a boost gauge and I believe that it is holding boost, max boost is around 20 psi on the 80 econo. As far as air filter/intake its stock. That video is not my truck however that is what im dealing with... any help is apreciated.

2003 Excursion, 4 " exhaust, 33" tires, leveling kit, DP tuner chip 60 tow, 80 tow, 80 econo, 120 race, Autometer GS gauges, overhead pods above mirror
:splat
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