When I approach a performance build, one of the technique I evaluate carefully is port shaping. The 13B engine respond extremely well to optimized port contour, allowing better airflow and improved throttle reaction. I begin by removing carbon buildup, smoothing transition area, and checking each rotor housing to ensure uniform reflection. Once the surface is prepared, I choose a port profile according to the client’s driving requirement. Visit us - https://allamericanmotorshub.com/product/13b-engine/