Re: How 2??
2003 6.0L's have a pretty loud turbo. When they are straight piped, they sound like that. I haven't heard a 7.3L sound quite like that, although a few with compounds come close.
2002 F-250 PSD
Gambling with 250/200's on PMR's.
478hp/851tq on Haller's dyno - 7/28/12
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