This silicone hose is a MUST-HAVE for every automotive enthusiast .Installing the Mishimoto MMHOSE SUB INT4BL is a breeze and the performance benefit is immediately noticeable; the increased air flow resulting in faster acceleration and improved throttle response. The build quality of the hose is top-notch, and its heat resistance ensures longevity. The only downside is that the price may be slightly higher than usual car belts..