Smart Car 451 Performance Header and Exhaust Install Complete! I put the Cat down! Part 3 of 4

This video shows the final installation of a Doug Thornly Header and Solo Performance Stainless Steel Exhaust system on a 2012 Smart For-Two Pure Edition 1.0 Liter 3 cylinder engine. The system deletes the catalytic converter but uses the existing O2 sensors. Will be fitting a spacer on the downstream O2 sensor to avoid Check Engine Lights. The new exhaust lowers engine bay heat, significantly increases HP and Torque. Performance, sound and top end is far better. The car also has a "Go-Pedal" and a stainless cold air intake with K&N air filter. Part 3 of 3 shows the completed install, part 4 is a bonus vehicle walkaround and first drive with the upgraded system.