Compression Ignition Addict
Join Date: Feb 2007
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I did mine. You can notice a loud whistle on the intake side with the airbox off. With an aftermarket intake installed it is noticeable as well. Stock airbox silences it completely, and you can't tell a difference.
Keep in mind this makes the intake whistle louder, the '03 turbo has more whistle in the exhaust.
2004 King Ranch F250 FX4 6.0L
5" Custom Lift with 325/65R18's on KMC Diesels
Stage 1's by Josh Davis (RCD), FASS 150/95@65psi.
Fuel Cross-Over, OEM FPR Plugged
Outlook Monitor, EGR Delete, Throttle Plate Delete, Banks Monster 4"-5" Tip