Compression Ignition Addict
Join Date: Oct 2011
Location: Chico, California
Thanked 223 Times in 214 Posts
Mentioned: 3 Post(s)
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this is the sound of air going back out of the intake.
this is normal, you didnt hear it before because the stock intake is enclosed, but since its open you can hear it now.
99.5 f250 7.3 4x4 258k
PHP Phoenix, S&B CAI, 4" TBE, Hpx, Stancor, RR Billet Wheel, AIH Delete, Autometer Gauges, Leveling kit, Transgo kit, Warn Hubs, Int'l Up-Pipes, RR IC Boots, Non-Ebpv Pedestal, High Flow Outlet, RR OCR, 08 Tow Mirrors.
Dad-2000 7.3 109k miles, Autometer Gauges, Superchips 1705, AIH Delete, 6637, 4" TBE, BD Billet Wheel, TruCool Max