The EVP V-FLOW reinforced silicone airbox intake tube is required for all big injector tunes and highly recommended for all EVP tuning stages.
The OEM hose is made from soft, unreinforced rubber, which implodes when the airflow demands are slightly higher than stock. Out reinforced Bed to Airbox Intake Tube is made from high-strength silicone with internal steel wire reinforcement, which guarantees the hose will not implode.
Other EVP reinforced silicone products to replace the inferior OEM parts are also part of a complete kit and are available separately:
