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Old 03-25-2014, 10:40 PM   #11
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Re: 7.3 Any external noise reduction options?

I also believe there are some sound dampening kits for your hood that may help as well. Does your hood still have the stock noise barrier / dampener material?[/quote]

Still have the stock noise barrier under the hood. good call.
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Old 08-07-2017, 09:37 PM   #12
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I added this 7.3L Diesel Fuel Rail Crossoverâ„¢ (FRx) 99-03 Powerstroke and it seemed to help
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Old 08-10-2017, 11:53 AM   #13
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make the stereo louder...
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Old 08-18-2017, 12:55 PM   #14
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I too have read the High Pressure Crossover can help to quiet down the injectors.
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Old 08-18-2017, 02:11 PM   #15
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The 7.3's are sure rattely engines, even for a Diesel.

You've probably already looked, but check your doghouse engine cover. Check the seal, as well. Mine came back from being worked on, noticeably louder. I looked at the cover, it looked and seemed fine, until I took it off. They missed one of the tangs. I reinstalled it myself, made a big difference.
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Old 08-22-2017, 07:27 AM   #16
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Quote:
Originally Posted by Bbasso View Post
I too have read the High Pressure Crossover can help to quiet down the injectors.

I have install this and it does help BUT only at idle and when the engine is warm.
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