The factory S4 intake has long been recognized as a restriction in 6.4 liter engines. I had wanted to go with one of Louie Ott's ITB setups for a long time but none were available. I finally ran across one that had never been used, and got a really good deal on it, so here I am. This is obviously a mock up on a table without the block. I did this just so I could get a feel for the angles and mounting points as I devise an air box solution. This intake system and cam solution should yeld close to 600HP and 550FT LBS of torque when measured at the rear tires. Using a typical 15% loss ratio calculated for drive train loss that would be near 700HP measured at the crank.
Block
Heads
& VarioCam
