Hikpack25zip Top !!exclusive!! Guide

Because the Hikpack25zip Top improves volumetric efficiency (VE) by reducing backpressure, your engine will naturally draw more air at the same throttle position. Expect a between 3,000 and 4,500 RPM. Tuners should add 5-7% fuel enrichment in the midrange cells.

The "top" vs. "zip" designation usually describes how you access the main compartment: Lid Compartment (Top Access) hikpack25zip top