Upper (IC to Throttle Body) Pipes for Big Front Mount Now you can choose between the normal upper IC pipe or position the 3in GM MAF between the BOV and Throttle Body for good fuel control and dump the BOV to atm. Upper pipe shown assembled and installed (GMAF not included in price). Couplings and clamps and lower pipe to IC are all included but not shown in photo Part Numbers: UIP-1gC