WHIPPLE: Bypass assembly 1.50" left (dual port) c7 spal This four piece designed cat-back

This four piece designed cat-back system utilizes a less-restricting muffler to improve your 4Runner's performance while maintaining a deep

for a hassle-free installation

Cloud-Based Tune Delivery w/ Wi-Fi Updates

Model: 6139024M (Natural/Manual)

Only Fits Dodge Challenger

WHIPPLE: Bypass assembly 1.50" left (dual port) c7 spal This four piece designed cat-backWhat does a bypass valve do? The best kept secret in forced induction is the little known air bypass valve. When properly installed the bypass valve makes the supercharger efficient and reduces parasitic loss! The bypass is operated by a vacuum actuator control unit that is normally closed. When vacuum is high the actuator opens the bypass valve, equalizing the vacuum pressure throughout the system. When boost is required the vacuum is decreased and