Join Date: Jan 2006
Location: Northern California
Thanked 2,626 Times in 2,117 Posts
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You cant "ram" the air into a turbo. The volume of air ingested at any given time at the turbo inlet is far beyond any pressures you could create with an air scoop. You'd have to be driving at speeds well above 150 mph to affect anything...and at that it would be negligible. Turbos only pull in the amount of air in relation to the volumetric pressures of hot air exiting the exhaust based on load. At no time is the engine working to breath otherwise there would be no boost. Boost is simply the amount of pressure always sitting in the intake system waiting to be ingested by the cylinders. A naturally aspirated engine in turn requires ambient pressures, velocity, and scavenging in order to work efficiently and can more easily benefit from a ram air affect.
'01 2500 Sport 4x4 5spd w/Fastcoolers, Mag-Hytec, EZ, RV275's, 4" w/o muffler, South Bend, Steering brace, aFe, 2 lo kit, Isspro Boost, FP, and EGT on pillar, Westach Trans/Diff temp gauge in dash pod, Raptor 100 w/ 1/2" line, Pac Brake, Rancho 9000, 285's