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Let me quote two other Forum members who have done and A - B comparison on the drag strip:
"The VaraRam pulled 2 1/2 mph over my Vorrtex through the 1/4 mile. VaraRam = 122.99 and Vortex = 120.58 mph." - LittleBoyBlu99 - Cedric Mosley - Tyler, Texas
"I gained 3/10s and 3 mph over an open airbox, with tie-down K&N filter. VaraRam rules." - Big Phil - Dallas, Texas