Compression Ignition Addict
Join Date: Oct 2011
Location: Chico, California
Thanked 259 Times in 250 Posts
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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.
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99.5 f250 7.3 4x4 265k Full Force 160/30, PHP Hydra, S&B CAI, 4" Exhaust, Van Turbo, RR 6/6 Billet Wheel, Autometer Gauges, Transgo Tugger/sonnax shift kits, Non-Ebpv Pedestal, 08 Tow Mirrors, Trucool Max.
Dad-2000 F250 7.3 4x4 114k Autometer Gauges, Superchips 1705 (Tow Safe), Blue 6637, 4" Exhaust, BD Billet Wheel, Trucool Max.