HPS Performance Intercooler Charge Pipe Kit (Cold Side), Black, 17-122WBKey Features Simple but effective hot side charge pipe upgrade that reduces turbo lag and improves throttle response. Dyno proven performance gains of +6. 6 horsepower and +9. 1 lb ft. of torque. 2. 5" mandrel bent aluminum alloy piping replaces the OEM stock restrictive plastic tube. Optional 1 8" NPT bung to run methanol injection or boost gauges. Bead rolled pipe ends prevent couplers from popping off under boost. This HPS Hot Side Intercooler