SKUNK2 TUNER SERIES CAMSHAFTS CAMS STAGE 1 H-SERIESSkunk2 Tuner Series Nokkenassen Stage 1. Gain an extra 10 15 hp and retain your factory idle and low speed emissions with Skunk2's Tuner Series Stage 1 Camshafts, our introductory line of high performance camshafts for Honda's H series VTEC engines. Tuner Series Stage 1 Camshafts are designed to optimize horsepower and torque on mildly modified engines. As a result, VTEC crossover is dramatic, allowing for that classic primary to secondary surge.