These lightweight test pipes fit in place of the heavy OEM catalytic converters. Using this test pipes removes the flow restriction a catalytic converter impose on an exhaust system and increases the horsepower.
The silencing effect of the converters are also removed, enhancing the aggressive Ferrari sports car sound, and these test pipes are ideal for track days and race application.
The Lambda or oxygen sensor bungs are ready installed and threaded.
The center section is made flexible. This is an added protection feature against vibration damage to the header pipes.
IMPORTANT:
These test pipes will trigger a CEL (Check Engine Light).
The only way to disable the CEL is to either mod the ECU, or install an O2 Sensor Simulator.